How to use assertEquals method of junit.framework.Assert class

...41		}42		return result;43	}44	public void test0Choose0() {45		junit.framework.Assert.assertEquals(org.apache.commons.math.util.MathUtils.binomialCoefficientDouble(0, 0), 1.0, 0);46		junit.framework.Assert.assertEquals(org.apache.commons.math.util.MathUtils.binomialCoefficientLog(0, 0), 0.0, 0);47		junit.framework.Assert.assertEquals(org.apache.commons.math.util.MathUtils.binomialCoefficient(0, 0), 1);48	}49	public void testAddAndCheck() {50		int big = java.lang.Integer.MAX_VALUE;51		int bigNeg = java.lang.Integer.MIN_VALUE;52		junit.framework.Assert.assertEquals(big, org.apache.commons.math.util.MathUtils.addAndCheck(big, 0));53		try {54			org.apache.commons.math.util.MathUtils.addAndCheck(big, 1);55			junit.framework.Assert.fail("Expecting ArithmeticException");56		} catch (java.lang.ArithmeticException ex) {57		}58		try {59			org.apache.commons.math.util.MathUtils.addAndCheck(bigNeg, -1);60			junit.framework.Assert.fail("Expecting ArithmeticException");61		} catch (java.lang.ArithmeticException ex) {62		}63	}64	public void testAddAndCheckLong() {65		long max = java.lang.Long.MAX_VALUE;66		long min = java.lang.Long.MIN_VALUE;67		junit.framework.Assert.assertEquals(max, org.apache.commons.math.util.MathUtils.addAndCheck(max, 0L));68		junit.framework.Assert.assertEquals(min, org.apache.commons.math.util.MathUtils.addAndCheck(min, 0L));69		junit.framework.Assert.assertEquals(max, org.apache.commons.math.util.MathUtils.addAndCheck(0L, max));70		junit.framework.Assert.assertEquals(min, org.apache.commons.math.util.MathUtils.addAndCheck(0L, min));71		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.addAndCheck(-1L, 2L));72		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.addAndCheck(2L, -1L));73		junit.framework.Assert.assertEquals(-3, org.apache.commons.math.util.MathUtils.addAndCheck(-2L, -1L));74		junit.framework.Assert.assertEquals(min, org.apache.commons.math.util.MathUtils.addAndCheck((min + 1), -1L));75		testAddAndCheckLongFailure(max, 1L);76		testAddAndCheckLongFailure(min, -1L);77		testAddAndCheckLongFailure(1L, max);78		testAddAndCheckLongFailure(-1L, min);79	}80	private void testAddAndCheckLongFailure(long a, long b) {81		try {82			org.apache.commons.math.util.MathUtils.addAndCheck(a, b);83			junit.framework.Assert.fail("Expecting ArithmeticException");84		} catch (java.lang.ArithmeticException ex) {85		}86	}87	public void testBinomialCoefficient() {88		long[] bcoef5 = new long[]{ 1 , 5 , 10 , 10 , 5 , 1 };89		long[] bcoef6 = new long[]{ 1 , 6 , 15 , 20 , 15 , 6 , 1 };90		for (int i = 0 ; i < 6 ; i++) {91			junit.framework.Assert.assertEquals(("5 choose " + i), bcoef5[i], org.apache.commons.math.util.MathUtils.binomialCoefficient(5, i));92		}93		for (int i = 0 ; i < 7 ; i++) {94			junit.framework.Assert.assertEquals(("6 choose " + i), bcoef6[i], org.apache.commons.math.util.MathUtils.binomialCoefficient(6, i));95		}96		for (int n = 1 ; n < 10 ; n++) {97			for (int k = 0 ; k <= n ; k++) {98				junit.framework.Assert.assertEquals(((n + " choose ") + k), binomialCoefficient(n, k), org.apache.commons.math.util.MathUtils.binomialCoefficient(n, k));99				junit.framework.Assert.assertEquals(((n + " choose ") + k), binomialCoefficient(n, k), org.apache.commons.math.util.MathUtils.binomialCoefficientDouble(n, k), java.lang.Double.MIN_VALUE);100				junit.framework.Assert.assertEquals(((n + " choose ") + k), java.lang.Math.log(binomialCoefficient(n, k)), org.apache.commons.math.util.MathUtils.binomialCoefficientLog(n, k), 1.0E-11);101			}102		}103		int[] n = new int[]{ 34 , 66 , 100 , 1500 , 1500 };104		int[] k = new int[]{ 17 , 33 , 10 , 1500 - 4 , 4 };105		for (int i = 0 ; i < (n.length) ; i++) {106			long expected = binomialCoefficient(n[i], k[i]);107			junit.framework.Assert.assertEquals((((n[i]) + " choose ") + (k[i])), expected, org.apache.commons.math.util.MathUtils.binomialCoefficient(n[i], k[i]));108			junit.framework.Assert.assertEquals((((n[i]) + " choose ") + (k[i])), expected, org.apache.commons.math.util.MathUtils.binomialCoefficientDouble(n[i], k[i]), 0.0);109			junit.framework.Assert.assertEquals((((("log(" + (n[i])) + " choose ") + (k[i])) + ")"), java.lang.Math.log(expected), org.apache.commons.math.util.MathUtils.binomialCoefficientLog(n[i], k[i]), 0.0);110		}111	}112	public void testBinomialCoefficientLarge() throws java.lang.Exception {113		for (int n = 0 ; n <= 200 ; n++) {114			for (int k = 0 ; k <= n ; k++) {115				long ourResult = -1;116				long exactResult = -1;117				boolean shouldThrow = false;118				boolean didThrow = false;119				try {120					ourResult = org.apache.commons.math.util.MathUtils.binomialCoefficient(n, k);121				} catch (java.lang.ArithmeticException ex) {122					didThrow = true;123				}124				try {125					exactResult = binomialCoefficient(n, k);126				} catch (java.lang.ArithmeticException ex) {127					shouldThrow = true;128				}129				junit.framework.Assert.assertEquals(((n + " choose ") + k), exactResult, ourResult);130				junit.framework.Assert.assertEquals(((n + " choose ") + k), shouldThrow, didThrow);131				junit.framework.Assert.assertTrue(((n + " choose ") + k), ((n > 66) || (!didThrow)));132				if ((!shouldThrow) && (exactResult > 1)) {133					junit.framework.Assert.assertEquals(((n + " choose ") + k), 1.0, ((org.apache.commons.math.util.MathUtils.binomialCoefficientDouble(n, k)) / exactResult), 1.0E-10);134					junit.framework.Assert.assertEquals(((n + " choose ") + k), 1, ((org.apache.commons.math.util.MathUtils.binomialCoefficientLog(n, k)) / (java.lang.Math.log(exactResult))), 1.0E-10);135				} 136			}137		}138		long ourResult = org.apache.commons.math.util.MathUtils.binomialCoefficient(300, 3);139		long exactResult = binomialCoefficient(300, 3);140		junit.framework.Assert.assertEquals(exactResult, ourResult);141		ourResult = org.apache.commons.math.util.MathUtils.binomialCoefficient(700, 697);142		exactResult = binomialCoefficient(700, 697);143		junit.framework.Assert.assertEquals(exactResult, ourResult);144		try {145			org.apache.commons.math.util.MathUtils.binomialCoefficient(700, 300);146			junit.framework.Assert.fail("Expecting ArithmeticException");147		} catch (java.lang.ArithmeticException ex) {148		}149		int n = 10000;150		ourResult = org.apache.commons.math.util.MathUtils.binomialCoefficient(n, 3);151		exactResult = binomialCoefficient(n, 3);152		junit.framework.Assert.assertEquals(exactResult, ourResult);153		junit.framework.Assert.assertEquals(1, ((org.apache.commons.math.util.MathUtils.binomialCoefficientDouble(n, 3)) / exactResult), 1.0E-10);154		junit.framework.Assert.assertEquals(1, ((org.apache.commons.math.util.MathUtils.binomialCoefficientLog(n, 3)) / (java.lang.Math.log(exactResult))), 1.0E-10);155	}156	public void testBinomialCoefficientFail() {157		try {158			org.apache.commons.math.util.MathUtils.binomialCoefficient(4, 5);159			junit.framework.Assert.fail("expecting IllegalArgumentException");160		} catch (java.lang.IllegalArgumentException ex) {161		}162		try {163			org.apache.commons.math.util.MathUtils.binomialCoefficientDouble(4, 5);164			junit.framework.Assert.fail("expecting IllegalArgumentException");165		} catch (java.lang.IllegalArgumentException ex) {166		}167		try {168			org.apache.commons.math.util.MathUtils.binomialCoefficientLog(4, 5);169			junit.framework.Assert.fail("expecting IllegalArgumentException");170		} catch (java.lang.IllegalArgumentException ex) {171		}172		try {173			org.apache.commons.math.util.MathUtils.binomialCoefficient(-1, -2);174			junit.framework.Assert.fail("expecting IllegalArgumentException");175		} catch (java.lang.IllegalArgumentException ex) {176		}177		try {178			org.apache.commons.math.util.MathUtils.binomialCoefficientDouble(-1, -2);179			junit.framework.Assert.fail("expecting IllegalArgumentException");180		} catch (java.lang.IllegalArgumentException ex) {181		}182		try {183			org.apache.commons.math.util.MathUtils.binomialCoefficientLog(-1, -2);184			junit.framework.Assert.fail("expecting IllegalArgumentException");185		} catch (java.lang.IllegalArgumentException ex) {186		}187		try {188			org.apache.commons.math.util.MathUtils.binomialCoefficient(67, 30);189			junit.framework.Assert.fail("expecting ArithmeticException");190		} catch (java.lang.ArithmeticException ex) {191		}192		try {193			org.apache.commons.math.util.MathUtils.binomialCoefficient(67, 34);194			junit.framework.Assert.fail("expecting ArithmeticException");195		} catch (java.lang.ArithmeticException ex) {196		}197		double x = org.apache.commons.math.util.MathUtils.binomialCoefficientDouble(1030, 515);198		junit.framework.Assert.assertTrue("expecting infinite binomial coefficient", java.lang.Double.isInfinite(x));199	}200	public void testCompareTo() {201		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.compareTo(152.33, 152.32, 0.011));202		junit.framework.Assert.assertTrue(((org.apache.commons.math.util.MathUtils.compareTo(152.308, 152.32, 0.011)) < 0));203		junit.framework.Assert.assertTrue(((org.apache.commons.math.util.MathUtils.compareTo(152.33, 152.318, 0.011)) > 0));204	}205	public void testCosh() {206		double x = 3.0;207		double expected = 10.06766;208		junit.framework.Assert.assertEquals(expected, org.apache.commons.math.util.MathUtils.cosh(x), 1.0E-5);209	}210	public void testCoshNaN() {211		junit.framework.Assert.assertTrue(java.lang.Double.isNaN(org.apache.commons.math.util.MathUtils.cosh(java.lang.Double.NaN)));212	}213	public void testEquals() {214		double[] testArray = new double[]{ java.lang.Double.NaN , java.lang.Double.POSITIVE_INFINITY , java.lang.Double.NEGATIVE_INFINITY , 1.0 , 0.0 };215		for (int i = 0 ; i < (testArray.length) ; i++) {216			for (int j = 0 ; j < (testArray.length) ; j++) {217				if (i == j) {218					junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(testArray[i], testArray[j]));219					junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(testArray[j], testArray[i]));220				} else {221					junit.framework.Assert.assertTrue(!(org.apache.commons.math.util.MathUtils.equals(testArray[i], testArray[j])));222					junit.framework.Assert.assertTrue(!(org.apache.commons.math.util.MathUtils.equals(testArray[j], testArray[i])));223				}224			}225		}226	}227	public void testEqualsWithAllowedDelta() {228		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(153.0, 153.0, 0.0625));229		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(153.0, 153.0625, 0.0625));230		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(152.9375, 153.0, 0.0625));231		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(java.lang.Double.NaN, java.lang.Double.NaN, 1.0));232		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(java.lang.Double.POSITIVE_INFINITY, java.lang.Double.POSITIVE_INFINITY, 1.0));233		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(java.lang.Double.NEGATIVE_INFINITY, java.lang.Double.NEGATIVE_INFINITY, 1.0));234		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(java.lang.Double.NEGATIVE_INFINITY, java.lang.Double.POSITIVE_INFINITY, 1.0));235		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(153.0, 153.0625, 0.0624));236		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(152.9374, 153.0, 0.0625));237	}238	public void testEqualsWithAllowedUlps() {239		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(153, 153, 1));240		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(153, 153.00000000000003, 1));241		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(153, 153.00000000000006, 1));242		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(153, 152.99999999999997, 1));243		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(153, 152.99999999999994, 1));244		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(-128, -127.99999999999999, 1));245		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(-128, -127.99999999999997, 1));246		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(-128, -128.00000000000003, 1));247		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(-128, -128.00000000000006, 1));248		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(java.lang.Double.POSITIVE_INFINITY, java.lang.Double.POSITIVE_INFINITY, 1));249		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(java.lang.Double.MAX_VALUE, java.lang.Double.POSITIVE_INFINITY, 1));250		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(java.lang.Double.NEGATIVE_INFINITY, java.lang.Double.NEGATIVE_INFINITY, 1));251		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(-(java.lang.Double.MAX_VALUE), java.lang.Double.NEGATIVE_INFINITY, 1));252		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(java.lang.Double.NaN, java.lang.Double.NaN, 1));253		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(java.lang.Double.NEGATIVE_INFINITY, java.lang.Double.POSITIVE_INFINITY, 100000));254	}255	public void testArrayEquals() {256		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(new double[]{ 1.0 }, null));257		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(null, new double[]{ 1.0 }));258		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(((double[])(null)), ((double[])(null))));259		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(new double[]{ 1.0 }, new double[0]));260		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(new double[]{ 1.0 }, new double[]{ 1.0 }));261		junit.framework.Assert.assertTrue(org.apache.commons.math.util.MathUtils.equals(new double[]{ java.lang.Double.NaN , java.lang.Double.POSITIVE_INFINITY , java.lang.Double.NEGATIVE_INFINITY , 1.0 , 0.0 }, new double[]{ java.lang.Double.NaN , java.lang.Double.POSITIVE_INFINITY , java.lang.Double.NEGATIVE_INFINITY , 1.0 , 0.0 }));262		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(new double[]{ java.lang.Double.POSITIVE_INFINITY }, new double[]{ java.lang.Double.NEGATIVE_INFINITY }));263		junit.framework.Assert.assertFalse(org.apache.commons.math.util.MathUtils.equals(new double[]{ 1.0 }, new double[]{ org.apache.commons.math.util.MathUtils.nextAfter(1.0, 2.0) }));264	}265	public void testFactorial() {266		for (int i = 1 ; i < 21 ; i++) {267			junit.framework.Assert.assertEquals((i + "! "), factorial(i), org.apache.commons.math.util.MathUtils.factorial(i));268			junit.framework.Assert.assertEquals((i + "! "), factorial(i), org.apache.commons.math.util.MathUtils.factorialDouble(i), java.lang.Double.MIN_VALUE);269			junit.framework.Assert.assertEquals((i + "! "), java.lang.Math.log(factorial(i)), org.apache.commons.math.util.MathUtils.factorialLog(i), 1.0E-11);270		}271		junit.framework.Assert.assertEquals("0", 1, org.apache.commons.math.util.MathUtils.factorial(0));272		junit.framework.Assert.assertEquals("0", 1.0, org.apache.commons.math.util.MathUtils.factorialDouble(0), 1.0E-14);273		junit.framework.Assert.assertEquals("0", 0.0, org.apache.commons.math.util.MathUtils.factorialLog(0), 1.0E-14);274	}275	public void testFactorialFail() {276		try {277			org.apache.commons.math.util.MathUtils.factorial(-1);278			junit.framework.Assert.fail("expecting IllegalArgumentException");279		} catch (java.lang.IllegalArgumentException ex) {280		}281		try {282			org.apache.commons.math.util.MathUtils.factorialDouble(-1);283			junit.framework.Assert.fail("expecting IllegalArgumentException");284		} catch (java.lang.IllegalArgumentException ex) {285		}286		try {287			org.apache.commons.math.util.MathUtils.factorialLog(-1);288			junit.framework.Assert.fail("expecting IllegalArgumentException");289		} catch (java.lang.IllegalArgumentException ex) {290		}291		try {292			org.apache.commons.math.util.MathUtils.factorial(21);293			junit.framework.Assert.fail("expecting ArithmeticException");294		} catch (java.lang.ArithmeticException ex) {295		}296		junit.framework.Assert.assertTrue("expecting infinite factorial value", java.lang.Double.isInfinite(org.apache.commons.math.util.MathUtils.factorialDouble(171)));297	}298	public void testGcd() {299		int a = 30;300		int b = 50;301		int c = 77;302		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.gcd(0, 0));303		junit.framework.Assert.assertEquals(b, org.apache.commons.math.util.MathUtils.gcd(0, b));304		junit.framework.Assert.assertEquals(a, org.apache.commons.math.util.MathUtils.gcd(a, 0));305		junit.framework.Assert.assertEquals(b, org.apache.commons.math.util.MathUtils.gcd(0, -b));306		junit.framework.Assert.assertEquals(a, org.apache.commons.math.util.MathUtils.gcd(-a, 0));307		junit.framework.Assert.assertEquals(10, org.apache.commons.math.util.MathUtils.gcd(a, b));308		junit.framework.Assert.assertEquals(10, org.apache.commons.math.util.MathUtils.gcd(-a, b));309		junit.framework.Assert.assertEquals(10, org.apache.commons.math.util.MathUtils.gcd(a, -b));310		junit.framework.Assert.assertEquals(10, org.apache.commons.math.util.MathUtils.gcd(-a, -b));311		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.gcd(a, c));312		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.gcd(-a, c));313		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.gcd(a, -c));314		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.gcd(-a, -c));315		junit.framework.Assert.assertEquals((3 * (1 << 15)), org.apache.commons.math.util.MathUtils.gcd((3 * (1 << 20)), (9 * (1 << 15))));316		junit.framework.Assert.assertEquals(java.lang.Integer.MAX_VALUE, org.apache.commons.math.util.MathUtils.gcd(java.lang.Integer.MAX_VALUE, 0));317		junit.framework.Assert.assertEquals(java.lang.Integer.MAX_VALUE, org.apache.commons.math.util.MathUtils.gcd(-(java.lang.Integer.MAX_VALUE), 0));318		junit.framework.Assert.assertEquals((1 << 30), org.apache.commons.math.util.MathUtils.gcd((1 << 30), -(java.lang.Integer.MIN_VALUE)));319		try {320			org.apache.commons.math.util.MathUtils.gcd(java.lang.Integer.MIN_VALUE, 0);321			junit.framework.Assert.fail("expecting ArithmeticException");322		} catch (java.lang.ArithmeticException expected) {323		}324		try {325			org.apache.commons.math.util.MathUtils.gcd(0, java.lang.Integer.MIN_VALUE);326			junit.framework.Assert.fail("expecting ArithmeticException");327		} catch (java.lang.ArithmeticException expected) {328		}329		try {330			org.apache.commons.math.util.MathUtils.gcd(java.lang.Integer.MIN_VALUE, java.lang.Integer.MIN_VALUE);331			junit.framework.Assert.fail("expecting ArithmeticException");332		} catch (java.lang.ArithmeticException expected) {333		}334	}335	public void testGcdLong() {336		long a = 30;337		long b = 50;338		long c = 77;339		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.gcd(0L, 0));340		junit.framework.Assert.assertEquals(b, org.apache.commons.math.util.MathUtils.gcd(0, b));341		junit.framework.Assert.assertEquals(a, org.apache.commons.math.util.MathUtils.gcd(a, 0));342		junit.framework.Assert.assertEquals(b, org.apache.commons.math.util.MathUtils.gcd(0, -b));343		junit.framework.Assert.assertEquals(a, org.apache.commons.math.util.MathUtils.gcd(-a, 0));344		junit.framework.Assert.assertEquals(10, org.apache.commons.math.util.MathUtils.gcd(a, b));345		junit.framework.Assert.assertEquals(10, org.apache.commons.math.util.MathUtils.gcd(-a, b));346		junit.framework.Assert.assertEquals(10, org.apache.commons.math.util.MathUtils.gcd(a, -b));347		junit.framework.Assert.assertEquals(10, org.apache.commons.math.util.MathUtils.gcd(-a, -b));348		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.gcd(a, c));349		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.gcd(-a, c));350		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.gcd(a, -c));351		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.gcd(-a, -c));352		junit.framework.Assert.assertEquals((3L * (1L << 45)), org.apache.commons.math.util.MathUtils.gcd((3L * (1L << 50)), (9L * (1L << 45))));353		junit.framework.Assert.assertEquals((1L << 45), org.apache.commons.math.util.MathUtils.gcd((1L << 45), java.lang.Long.MIN_VALUE));354		junit.framework.Assert.assertEquals(java.lang.Long.MAX_VALUE, org.apache.commons.math.util.MathUtils.gcd(java.lang.Long.MAX_VALUE, 0L));355		junit.framework.Assert.assertEquals(java.lang.Long.MAX_VALUE, org.apache.commons.math.util.MathUtils.gcd(-(java.lang.Long.MAX_VALUE), 0L));356		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.gcd(60247241209L, 153092023L));357		try {358			org.apache.commons.math.util.MathUtils.gcd(java.lang.Long.MIN_VALUE, 0);359			junit.framework.Assert.fail("expecting ArithmeticException");360		} catch (java.lang.ArithmeticException expected) {361		}362		try {363			org.apache.commons.math.util.MathUtils.gcd(0, java.lang.Long.MIN_VALUE);364			junit.framework.Assert.fail("expecting ArithmeticException");365		} catch (java.lang.ArithmeticException expected) {366		}367		try {368			org.apache.commons.math.util.MathUtils.gcd(java.lang.Long.MIN_VALUE, java.lang.Long.MIN_VALUE);369			junit.framework.Assert.fail("expecting ArithmeticException");370		} catch (java.lang.ArithmeticException expected) {371		}372	}373	public void testGcdConsistency() {374		int[] primeList = new int[]{ 19 , 23 , 53 , 67 , 73 , 79 , 101 , 103 , 111 , 131 };375		java.util.ArrayList<java.lang.Integer> primes = new java.util.ArrayList<java.lang.Integer>();376		for (int i = 0 ; i < (primeList.length) ; i++) {377			primes.add(java.lang.Integer.valueOf(primeList[i]));378		}379		org.apache.commons.math.random.RandomDataImpl randomData = new org.apache.commons.math.random.RandomDataImpl();380		for (int i = 0 ; i < 20 ; i++) {381			java.lang.Object[] sample = randomData.nextSample(primes, 4);382			int p1 = ((java.lang.Integer)(sample[0])).intValue();383			int p2 = ((java.lang.Integer)(sample[1])).intValue();384			int p3 = ((java.lang.Integer)(sample[2])).intValue();385			int p4 = ((java.lang.Integer)(sample[3])).intValue();386			int i1 = (p1 * p2) * p3;387			int i2 = (p1 * p2) * p4;388			int gcd = p1 * p2;389			junit.framework.Assert.assertEquals(gcd, org.apache.commons.math.util.MathUtils.gcd(i1, i2));390			long l1 = i1;391			long l2 = i2;392			junit.framework.Assert.assertEquals(gcd, org.apache.commons.math.util.MathUtils.gcd(l1, l2));393		}394	}395	public void testHash() {396		double[] testArray = new double[]{ java.lang.Double.NaN , java.lang.Double.POSITIVE_INFINITY , java.lang.Double.NEGATIVE_INFINITY , 1.0 , 0.0 , 1.0E-14 , 1 + 1.0E-14 , java.lang.Double.MIN_VALUE , java.lang.Double.MAX_VALUE };397		for (int i = 0 ; i < (testArray.length) ; i++) {398			for (int j = 0 ; j < (testArray.length) ; j++) {399				if (i == j) {400					junit.framework.Assert.assertEquals(org.apache.commons.math.util.MathUtils.hash(testArray[i]), org.apache.commons.math.util.MathUtils.hash(testArray[j]));401					junit.framework.Assert.assertEquals(org.apache.commons.math.util.MathUtils.hash(testArray[j]), org.apache.commons.math.util.MathUtils.hash(testArray[i]));402				} else {403					junit.framework.Assert.assertTrue(((org.apache.commons.math.util.MathUtils.hash(testArray[i])) != (org.apache.commons.math.util.MathUtils.hash(testArray[j]))));404					junit.framework.Assert.assertTrue(((org.apache.commons.math.util.MathUtils.hash(testArray[j])) != (org.apache.commons.math.util.MathUtils.hash(testArray[i]))));405				}406			}407		}408	}409	public void testArrayHash() {410		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.hash(((double[])(null))));411		junit.framework.Assert.assertEquals(org.apache.commons.math.util.MathUtils.hash(new double[]{ java.lang.Double.NaN , java.lang.Double.POSITIVE_INFINITY , java.lang.Double.NEGATIVE_INFINITY , 1.0 , 0.0 }), org.apache.commons.math.util.MathUtils.hash(new double[]{ java.lang.Double.NaN , java.lang.Double.POSITIVE_INFINITY , java.lang.Double.NEGATIVE_INFINITY , 1.0 , 0.0 }));412		junit.framework.Assert.assertFalse(((org.apache.commons.math.util.MathUtils.hash(new double[]{ 1.0 })) == (org.apache.commons.math.util.MathUtils.hash(new double[]{ org.apache.commons.math.util.MathUtils.nextAfter(1.0, 2.0) }))));413		junit.framework.Assert.assertFalse(((org.apache.commons.math.util.MathUtils.hash(new double[]{ 1.0 })) == (org.apache.commons.math.util.MathUtils.hash(new double[]{ 1.0 , 1.0 }))));414	}415	public void testPermutedArrayHash() {416		double[] original = new double[10];417		double[] permuted = new double[10];418		org.apache.commons.math.random.RandomDataImpl random = new org.apache.commons.math.random.RandomDataImpl();419		for (int i = 0 ; i < 10 ; i++) {420			original[i] = random.nextUniform((i + 0.5), (i + 0.75));421		}422		boolean isIdentity = true;423		do {424			int[] permutation = random.nextPermutation(10, 10);425			for (int i = 0 ; i < 10 ; i++) {426				if (i != (permutation[i])) {427					isIdentity = false;428				} 429				permuted[i] = original[permutation[i]];430			}431		} while (isIdentity );432		junit.framework.Assert.assertFalse(((org.apache.commons.math.util.MathUtils.hash(original)) == (org.apache.commons.math.util.MathUtils.hash(permuted))));433	}434	public void testIndicatorByte() {435		junit.framework.Assert.assertEquals(((byte)(1)), org.apache.commons.math.util.MathUtils.indicator(((byte)(2))));436		junit.framework.Assert.assertEquals(((byte)(1)), org.apache.commons.math.util.MathUtils.indicator(((byte)(0))));437		junit.framework.Assert.assertEquals(((byte)(-1)), org.apache.commons.math.util.MathUtils.indicator(((byte)(-2))));438	}439	public void testIndicatorDouble() {440		double delta = 0.0;441		junit.framework.Assert.assertEquals(1.0, org.apache.commons.math.util.MathUtils.indicator(2.0), delta);442		junit.framework.Assert.assertEquals(1.0, org.apache.commons.math.util.MathUtils.indicator(0.0), delta);443		junit.framework.Assert.assertEquals(-1.0, org.apache.commons.math.util.MathUtils.indicator(-2.0), delta);444		junit.framework.Assert.assertEquals(java.lang.Double.NaN, org.apache.commons.math.util.MathUtils.indicator(java.lang.Double.NaN));445	}446	public void testIndicatorFloat() {447		float delta = 0.0F;448		junit.framework.Assert.assertEquals(1.0F, org.apache.commons.math.util.MathUtils.indicator(2.0F), delta);449		junit.framework.Assert.assertEquals(1.0F, org.apache.commons.math.util.MathUtils.indicator(0.0F), delta);450		junit.framework.Assert.assertEquals(-1.0F, org.apache.commons.math.util.MathUtils.indicator(-2.0F), delta);451	}452	public void testIndicatorInt() {453		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.indicator(2));454		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.indicator(0));455		junit.framework.Assert.assertEquals(-1, org.apache.commons.math.util.MathUtils.indicator(-2));456	}457	public void testIndicatorLong() {458		junit.framework.Assert.assertEquals(1L, org.apache.commons.math.util.MathUtils.indicator(2L));459		junit.framework.Assert.assertEquals(1L, org.apache.commons.math.util.MathUtils.indicator(0L));460		junit.framework.Assert.assertEquals(-1L, org.apache.commons.math.util.MathUtils.indicator(-2L));461	}462	public void testIndicatorShort() {463		junit.framework.Assert.assertEquals(((short)(1)), org.apache.commons.math.util.MathUtils.indicator(((short)(2))));464		junit.framework.Assert.assertEquals(((short)(1)), org.apache.commons.math.util.MathUtils.indicator(((short)(0))));465		junit.framework.Assert.assertEquals(((short)(-1)), org.apache.commons.math.util.MathUtils.indicator(((short)(-2))));466	}467	public void testLcm() {468		int a = 30;469		int b = 50;470		int c = 77;471		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.lcm(0, b));472		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.lcm(a, 0));473		junit.framework.Assert.assertEquals(b, org.apache.commons.math.util.MathUtils.lcm(1, b));474		junit.framework.Assert.assertEquals(a, org.apache.commons.math.util.MathUtils.lcm(a, 1));475		junit.framework.Assert.assertEquals(150, org.apache.commons.math.util.MathUtils.lcm(a, b));476		junit.framework.Assert.assertEquals(150, org.apache.commons.math.util.MathUtils.lcm(-a, b));477		junit.framework.Assert.assertEquals(150, org.apache.commons.math.util.MathUtils.lcm(a, -b));478		junit.framework.Assert.assertEquals(150, org.apache.commons.math.util.MathUtils.lcm(-a, -b));479		junit.framework.Assert.assertEquals(2310, org.apache.commons.math.util.MathUtils.lcm(a, c));480		junit.framework.Assert.assertEquals(((1 << 20) * 15), org.apache.commons.math.util.MathUtils.lcm(((1 << 20) * 3), ((1 << 20) * 5)));481		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.lcm(0, 0));482		try {483			org.apache.commons.math.util.MathUtils.lcm(java.lang.Integer.MIN_VALUE, 1);484			junit.framework.Assert.fail("Expecting ArithmeticException");485		} catch (java.lang.ArithmeticException expected) {486		}487		try {488			org.apache.commons.math.util.MathUtils.lcm(java.lang.Integer.MIN_VALUE, (1 << 20));489			junit.framework.Assert.fail("Expecting ArithmeticException");490		} catch (java.lang.ArithmeticException expected) {491		}492		try {493			org.apache.commons.math.util.MathUtils.lcm(java.lang.Integer.MAX_VALUE, ((java.lang.Integer.MAX_VALUE) - 1));494			junit.framework.Assert.fail("Expecting ArithmeticException");495		} catch (java.lang.ArithmeticException expected) {496		}497	}498	public void testLcmLong() {499		long a = 30;500		long b = 50;501		long c = 77;502		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.lcm(0, b));503		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.lcm(a, 0));504		junit.framework.Assert.assertEquals(b, org.apache.commons.math.util.MathUtils.lcm(1, b));505		junit.framework.Assert.assertEquals(a, org.apache.commons.math.util.MathUtils.lcm(a, 1));506		junit.framework.Assert.assertEquals(150, org.apache.commons.math.util.MathUtils.lcm(a, b));507		junit.framework.Assert.assertEquals(150, org.apache.commons.math.util.MathUtils.lcm(-a, b));508		junit.framework.Assert.assertEquals(150, org.apache.commons.math.util.MathUtils.lcm(a, -b));509		junit.framework.Assert.assertEquals(150, org.apache.commons.math.util.MathUtils.lcm(-a, -b));510		junit.framework.Assert.assertEquals(2310, org.apache.commons.math.util.MathUtils.lcm(a, c));511		junit.framework.Assert.assertEquals(java.lang.Long.MAX_VALUE, org.apache.commons.math.util.MathUtils.lcm(60247241209L, 153092023L));512		junit.framework.Assert.assertEquals(((1L << 50) * 15), org.apache.commons.math.util.MathUtils.lcm(((1L << 45) * 3), ((1L << 50) * 5)));513		junit.framework.Assert.assertEquals(0L, org.apache.commons.math.util.MathUtils.lcm(0L, 0L));514		try {515			org.apache.commons.math.util.MathUtils.lcm(java.lang.Long.MIN_VALUE, 1);516			junit.framework.Assert.fail("Expecting ArithmeticException");517		} catch (java.lang.ArithmeticException expected) {518		}519		try {520			org.apache.commons.math.util.MathUtils.lcm(java.lang.Long.MIN_VALUE, (1 << 20));521			junit.framework.Assert.fail("Expecting ArithmeticException");522		} catch (java.lang.ArithmeticException expected) {523		}524		junit.framework.Assert.assertEquals((((long)(java.lang.Integer.MAX_VALUE)) * ((java.lang.Integer.MAX_VALUE) - 1)), org.apache.commons.math.util.MathUtils.lcm(((long)(java.lang.Integer.MAX_VALUE)), ((java.lang.Integer.MAX_VALUE) - 1)));525		try {526			org.apache.commons.math.util.MathUtils.lcm(java.lang.Long.MAX_VALUE, ((java.lang.Long.MAX_VALUE) - 1));527			junit.framework.Assert.fail("Expecting ArithmeticException");528		} catch (java.lang.ArithmeticException expected) {529		}530	}531	public void testLog() {532		junit.framework.Assert.assertEquals(2.0, org.apache.commons.math.util.MathUtils.log(2, 4), 0);533		junit.framework.Assert.assertEquals(3.0, org.apache.commons.math.util.MathUtils.log(2, 8), 0);534		junit.framework.Assert.assertTrue(java.lang.Double.isNaN(org.apache.commons.math.util.MathUtils.log(-1, 1)));535		junit.framework.Assert.assertTrue(java.lang.Double.isNaN(org.apache.commons.math.util.MathUtils.log(1, -1)));536		junit.framework.Assert.assertTrue(java.lang.Double.isNaN(org.apache.commons.math.util.MathUtils.log(0, 0)));537		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.log(0, 10), 0);538		junit.framework.Assert.assertEquals(java.lang.Double.NEGATIVE_INFINITY, org.apache.commons.math.util.MathUtils.log(10, 0), 0);539	}540	public void testMulAndCheck() {541		int big = java.lang.Integer.MAX_VALUE;542		int bigNeg = java.lang.Integer.MIN_VALUE;543		junit.framework.Assert.assertEquals(big, org.apache.commons.math.util.MathUtils.mulAndCheck(big, 1));544		try {545			org.apache.commons.math.util.MathUtils.mulAndCheck(big, 2);546			junit.framework.Assert.fail("Expecting ArithmeticException");547		} catch (java.lang.ArithmeticException ex) {548		}549		try {550			org.apache.commons.math.util.MathUtils.mulAndCheck(bigNeg, 2);551			junit.framework.Assert.fail("Expecting ArithmeticException");552		} catch (java.lang.ArithmeticException ex) {553		}554	}555	public void testMulAndCheckLong() {556		long max = java.lang.Long.MAX_VALUE;557		long min = java.lang.Long.MIN_VALUE;558		junit.framework.Assert.assertEquals(max, org.apache.commons.math.util.MathUtils.mulAndCheck(max, 1L));559		junit.framework.Assert.assertEquals(min, org.apache.commons.math.util.MathUtils.mulAndCheck(min, 1L));560		junit.framework.Assert.assertEquals(0L, org.apache.commons.math.util.MathUtils.mulAndCheck(max, 0L));561		junit.framework.Assert.assertEquals(0L, org.apache.commons.math.util.MathUtils.mulAndCheck(min, 0L));562		junit.framework.Assert.assertEquals(max, org.apache.commons.math.util.MathUtils.mulAndCheck(1L, max));563		junit.framework.Assert.assertEquals(min, org.apache.commons.math.util.MathUtils.mulAndCheck(1L, min));564		junit.framework.Assert.assertEquals(0L, org.apache.commons.math.util.MathUtils.mulAndCheck(0L, max));565		junit.framework.Assert.assertEquals(0L, org.apache.commons.math.util.MathUtils.mulAndCheck(0L, min));566		junit.framework.Assert.assertEquals(1L, org.apache.commons.math.util.MathUtils.mulAndCheck(-1L, -1L));567		junit.framework.Assert.assertEquals(min, org.apache.commons.math.util.MathUtils.mulAndCheck((min / 2), 2));568		testMulAndCheckLongFailure(max, 2L);569		testMulAndCheckLongFailure(2L, max);570		testMulAndCheckLongFailure(min, 2L);571		testMulAndCheckLongFailure(2L, min);572		testMulAndCheckLongFailure(min, -1L);573		testMulAndCheckLongFailure(-1L, min);574	}575	private void testMulAndCheckLongFailure(long a, long b) {576		try {577			org.apache.commons.math.util.MathUtils.mulAndCheck(a, b);578			junit.framework.Assert.fail("Expecting ArithmeticException");579		} catch (java.lang.ArithmeticException ex) {580		}581	}582	public void testNextAfter() {583		junit.framework.Assert.assertEquals(16.0, org.apache.commons.math.util.MathUtils.nextAfter(15.999999999999998, 34.27555555555555), 0.0);584		junit.framework.Assert.assertEquals(-15.999999999999996, org.apache.commons.math.util.MathUtils.nextAfter(-15.999999999999998, 34.27555555555555), 0.0);585		junit.framework.Assert.assertEquals(15.999999999999996, org.apache.commons.math.util.MathUtils.nextAfter(15.999999999999998, 2.142222222222222), 0.0);586		junit.framework.Assert.assertEquals(-15.999999999999996, org.apache.commons.math.util.MathUtils.nextAfter(-15.999999999999998, 2.142222222222222), 0.0);587		junit.framework.Assert.assertEquals(8.000000000000002, org.apache.commons.math.util.MathUtils.nextAfter(8.0, 34.27555555555555), 0.0);588		junit.framework.Assert.assertEquals(-7.999999999999999, org.apache.commons.math.util.MathUtils.nextAfter(-8.0, 34.27555555555555), 0.0);589		junit.framework.Assert.assertEquals(7.999999999999999, org.apache.commons.math.util.MathUtils.nextAfter(8.0, 2.142222222222222), 0.0);590		junit.framework.Assert.assertEquals(-7.999999999999999, org.apache.commons.math.util.MathUtils.nextAfter(-8.0, 2.142222222222222), 0.0);591		junit.framework.Assert.assertEquals(2.308922399667661E-4, org.apache.commons.math.util.MathUtils.nextAfter(2.3089223996676606E-4, 2.308922399667661E-4), 0.0);592		junit.framework.Assert.assertEquals(2.308922399667661E-4, org.apache.commons.math.util.MathUtils.nextAfter(2.3089223996676606E-4, 2.3089223996676606E-4), 0.0);593		junit.framework.Assert.assertEquals(2.3089223996676603E-4, org.apache.commons.math.util.MathUtils.nextAfter(2.3089223996676606E-4, 2.3089223996676603E-4), 0.0);594		junit.framework.Assert.assertEquals(2.3089223996676603E-4, org.apache.commons.math.util.MathUtils.nextAfter(2.3089223996676606E-4, -2.308922399667661E-4), 0.0);595		junit.framework.Assert.assertEquals(2.3089223996676603E-4, org.apache.commons.math.util.MathUtils.nextAfter(2.3089223996676606E-4, -2.3089223996676606E-4), 0.0);596		junit.framework.Assert.assertEquals(2.3089223996676603E-4, org.apache.commons.math.util.MathUtils.nextAfter(2.3089223996676606E-4, -2.3089223996676603E-4), 0.0);597		junit.framework.Assert.assertEquals(-2.3089223996676603E-4, org.apache.commons.math.util.MathUtils.nextAfter(-2.3089223996676606E-4, 2.308922399667661E-4), 0.0);598		junit.framework.Assert.assertEquals(-2.3089223996676603E-4, org.apache.commons.math.util.MathUtils.nextAfter(-2.3089223996676606E-4, 2.3089223996676606E-4), 0.0);599		junit.framework.Assert.assertEquals(-2.3089223996676603E-4, org.apache.commons.math.util.MathUtils.nextAfter(-2.3089223996676606E-4, 2.3089223996676603E-4), 0.0);600		junit.framework.Assert.assertEquals(-2.308922399667661E-4, org.apache.commons.math.util.MathUtils.nextAfter(-2.3089223996676606E-4, -2.308922399667661E-4), 0.0);601		junit.framework.Assert.assertEquals(-2.308922399667661E-4, org.apache.commons.math.util.MathUtils.nextAfter(-2.3089223996676606E-4, -2.3089223996676606E-4), 0.0);602		junit.framework.Assert.assertEquals(-2.3089223996676603E-4, org.apache.commons.math.util.MathUtils.nextAfter(-2.3089223996676606E-4, -2.3089223996676603E-4), 0.0);603	}604	public void testNextAfterSpecialCases() {605		junit.framework.Assert.assertTrue(java.lang.Double.isInfinite(org.apache.commons.math.util.MathUtils.nextAfter(java.lang.Double.NEGATIVE_INFINITY, 0)));606		junit.framework.Assert.assertTrue(java.lang.Double.isInfinite(org.apache.commons.math.util.MathUtils.nextAfter(java.lang.Double.POSITIVE_INFINITY, 0)));607		junit.framework.Assert.assertTrue(java.lang.Double.isNaN(org.apache.commons.math.util.MathUtils.nextAfter(java.lang.Double.NaN, 0)));608		junit.framework.Assert.assertTrue(java.lang.Double.isInfinite(org.apache.commons.math.util.MathUtils.nextAfter(java.lang.Double.MAX_VALUE, java.lang.Double.POSITIVE_INFINITY)));609		junit.framework.Assert.assertTrue(java.lang.Double.isInfinite(org.apache.commons.math.util.MathUtils.nextAfter(-(java.lang.Double.MAX_VALUE), java.lang.Double.NEGATIVE_INFINITY)));610		junit.framework.Assert.assertEquals(java.lang.Double.MIN_VALUE, org.apache.commons.math.util.MathUtils.nextAfter(0, 1), 0);611		junit.framework.Assert.assertEquals(-(java.lang.Double.MIN_VALUE), org.apache.commons.math.util.MathUtils.nextAfter(0, -1), 0);612		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.nextAfter(java.lang.Double.MIN_VALUE, -1), 0);613		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.nextAfter(-(java.lang.Double.MIN_VALUE), 1), 0);614	}615	public void testScalb() {616		junit.framework.Assert.assertEquals(0.0, org.apache.commons.math.util.MathUtils.scalb(0.0, 5), 1.0E-15);617		junit.framework.Assert.assertEquals(32.0, org.apache.commons.math.util.MathUtils.scalb(1.0, 5), 1.0E-15);618		junit.framework.Assert.assertEquals((1.0 / 32.0), org.apache.commons.math.util.MathUtils.scalb(1.0, -5), 1.0E-15);619		junit.framework.Assert.assertEquals(java.lang.Math.PI, org.apache.commons.math.util.MathUtils.scalb(java.lang.Math.PI, 0), 1.0E-15);620		junit.framework.Assert.assertTrue(java.lang.Double.isInfinite(org.apache.commons.math.util.MathUtils.scalb(java.lang.Double.POSITIVE_INFINITY, 1)));621		junit.framework.Assert.assertTrue(java.lang.Double.isInfinite(org.apache.commons.math.util.MathUtils.scalb(java.lang.Double.NEGATIVE_INFINITY, 1)));622		junit.framework.Assert.assertTrue(java.lang.Double.isNaN(org.apache.commons.math.util.MathUtils.scalb(java.lang.Double.NaN, 1)));623	}624	public void testNormalizeAngle() {625		for (double a = -15.0 ; a <= 15.0 ; a += 0.1) {626			for (double b = -15.0 ; b <= 15.0 ; b += 0.2) {627				double c = org.apache.commons.math.util.MathUtils.normalizeAngle(a, b);628				junit.framework.Assert.assertTrue(((b - (java.lang.Math.PI)) <= c));629				junit.framework.Assert.assertTrue((c <= (b + (java.lang.Math.PI))));630				double twoK = java.lang.Math.rint(((a - c) / (java.lang.Math.PI)));631				junit.framework.Assert.assertEquals(c, (a - (twoK * (java.lang.Math.PI))), 1.0E-14);632			}633		}634	}635	public void testNormalizeArray() {636		double[] testValues1 = new double[]{ 1 , 1 , 2 };637		org.apache.commons.math.TestUtils.assertEquals(new double[]{ 0.25 , 0.25 , 0.5 }, org.apache.commons.math.util.MathUtils.normalizeArray(testValues1, 1), java.lang.Double.MIN_VALUE);638		double[] testValues2 = new double[]{ -1 , -1 , 1 };639		org.apache.commons.math.TestUtils.assertEquals(new double[]{ 1 , 1 , -1 }, org.apache.commons.math.util.MathUtils.normalizeArray(testValues2, 1), java.lang.Double.MIN_VALUE);640		double[] testValues3 = new double[]{ -1 , -1 , java.lang.Double.NaN , 1 , java.lang.Double.NaN };641		org.apache.commons.math.TestUtils.assertEquals(new double[]{ 1 , 1 , java.lang.Double.NaN , -1 , java.lang.Double.NaN }, org.apache.commons.math.util.MathUtils.normalizeArray(testValues3, 1), java.lang.Double.MIN_VALUE);642		double[] zeroSum = new double[]{ -1 , 1 };643		try {644			org.apache.commons.math.util.MathUtils.normalizeArray(zeroSum, 1);645			junit.framework.Assert.fail("expecting ArithmeticException");646		} catch (java.lang.ArithmeticException ex) {647		}648		double[] hasInf = new double[]{ 1 , 2 , 1 , java.lang.Double.NEGATIVE_INFINITY };649		try {650			org.apache.commons.math.util.MathUtils.normalizeArray(hasInf, 1);651			junit.framework.Assert.fail("expecting ArithmeticException");652		} catch (java.lang.ArithmeticException ex) {653		}654		try {655			org.apache.commons.math.util.MathUtils.normalizeArray(testValues1, java.lang.Double.POSITIVE_INFINITY);656			junit.framework.Assert.fail("expecting IllegalArgumentException");657		} catch (java.lang.IllegalArgumentException ex) {658		}659		try {660			org.apache.commons.math.util.MathUtils.normalizeArray(testValues1, java.lang.Double.NaN);661			junit.framework.Assert.fail("expecting IllegalArgumentException");662		} catch (java.lang.IllegalArgumentException ex) {663		}664	}665	public void testRoundDouble() {666		double x = 1.23456789;667		junit.framework.Assert.assertEquals(1.23, org.apache.commons.math.util.MathUtils.round(x, 2), 0.0);668		junit.framework.Assert.assertEquals(1.235, org.apache.commons.math.util.MathUtils.round(x, 3), 0.0);669		junit.framework.Assert.assertEquals(1.2346, org.apache.commons.math.util.MathUtils.round(x, 4), 0.0);670		junit.framework.Assert.assertEquals(39.25, org.apache.commons.math.util.MathUtils.round(39.245, 2), 0.0);671		junit.framework.Assert.assertEquals(39.24, org.apache.commons.math.util.MathUtils.round(39.245, 2, java.math.BigDecimal.ROUND_DOWN), 0.0);672		double xx = 39.0;673		xx = xx + (245.0 / 1000.0);674		junit.framework.Assert.assertEquals(39.25, org.apache.commons.math.util.MathUtils.round(xx, 2), 0.0);675		junit.framework.Assert.assertEquals(30.1, org.apache.commons.math.util.MathUtils.round(30.095, 2), 0.0);676		junit.framework.Assert.assertEquals(30.1, org.apache.commons.math.util.MathUtils.round(30.095, 1), 0.0);677		junit.framework.Assert.assertEquals(33.1, org.apache.commons.math.util.MathUtils.round(33.095, 1), 0.0);678		junit.framework.Assert.assertEquals(33.1, org.apache.commons.math.util.MathUtils.round(33.095, 2), 0.0);679		junit.framework.Assert.assertEquals(50.09, org.apache.commons.math.util.MathUtils.round(50.085, 2), 0.0);680		junit.framework.Assert.assertEquals(50.19, org.apache.commons.math.util.MathUtils.round(50.185, 2), 0.0);681		junit.framework.Assert.assertEquals(50.01, org.apache.commons.math.util.MathUtils.round(50.005, 2), 0.0);682		junit.framework.Assert.assertEquals(30.01, org.apache.commons.math.util.MathUtils.round(30.005, 2), 0.0);683		junit.framework.Assert.assertEquals(30.65, org.apache.commons.math.util.MathUtils.round(30.645, 2), 0.0);684		junit.framework.Assert.assertEquals(1.24, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_CEILING), 0.0);685		junit.framework.Assert.assertEquals(1.235, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_CEILING), 0.0);686		junit.framework.Assert.assertEquals(1.2346, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_CEILING), 0.0);687		junit.framework.Assert.assertEquals(-1.23, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_CEILING), 0.0);688		junit.framework.Assert.assertEquals(-1.234, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_CEILING), 0.0);689		junit.framework.Assert.assertEquals(-1.2345, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_CEILING), 0.0);690		junit.framework.Assert.assertEquals(1.23, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_DOWN), 0.0);691		junit.framework.Assert.assertEquals(1.234, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_DOWN), 0.0);692		junit.framework.Assert.assertEquals(1.2345, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_DOWN), 0.0);693		junit.framework.Assert.assertEquals(-1.23, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_DOWN), 0.0);694		junit.framework.Assert.assertEquals(-1.234, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_DOWN), 0.0);695		junit.framework.Assert.assertEquals(-1.2345, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_DOWN), 0.0);696		junit.framework.Assert.assertEquals(1.23, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_FLOOR), 0.0);697		junit.framework.Assert.assertEquals(1.234, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_FLOOR), 0.0);698		junit.framework.Assert.assertEquals(1.2345, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_FLOOR), 0.0);699		junit.framework.Assert.assertEquals(-1.24, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_FLOOR), 0.0);700		junit.framework.Assert.assertEquals(-1.235, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_FLOOR), 0.0);701		junit.framework.Assert.assertEquals(-1.2346, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_FLOOR), 0.0);702		junit.framework.Assert.assertEquals(1.23, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);703		junit.framework.Assert.assertEquals(1.235, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);704		junit.framework.Assert.assertEquals(1.2346, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);705		junit.framework.Assert.assertEquals(-1.23, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);706		junit.framework.Assert.assertEquals(-1.235, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);707		junit.framework.Assert.assertEquals(-1.2346, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);708		junit.framework.Assert.assertEquals(1.234, org.apache.commons.math.util.MathUtils.round(1.2345, 3, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);709		junit.framework.Assert.assertEquals(-1.234, org.apache.commons.math.util.MathUtils.round(-1.2345, 3, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);710		junit.framework.Assert.assertEquals(1.23, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);711		junit.framework.Assert.assertEquals(1.235, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);712		junit.framework.Assert.assertEquals(1.2346, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);713		junit.framework.Assert.assertEquals(-1.23, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);714		junit.framework.Assert.assertEquals(-1.235, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);715		junit.framework.Assert.assertEquals(-1.2346, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);716		junit.framework.Assert.assertEquals(1.234, org.apache.commons.math.util.MathUtils.round(1.2345, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);717		junit.framework.Assert.assertEquals(-1.234, org.apache.commons.math.util.MathUtils.round(-1.2345, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);718		junit.framework.Assert.assertEquals(1.236, org.apache.commons.math.util.MathUtils.round(1.2355, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);719		junit.framework.Assert.assertEquals(-1.236, org.apache.commons.math.util.MathUtils.round(-1.2355, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);720		junit.framework.Assert.assertEquals(1.23, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_HALF_UP), 0.0);721		junit.framework.Assert.assertEquals(1.235, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_HALF_UP), 0.0);722		junit.framework.Assert.assertEquals(1.2346, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_HALF_UP), 0.0);723		junit.framework.Assert.assertEquals(-1.23, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_HALF_UP), 0.0);724		junit.framework.Assert.assertEquals(-1.235, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_HALF_UP), 0.0);725		junit.framework.Assert.assertEquals(-1.2346, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_HALF_UP), 0.0);726		junit.framework.Assert.assertEquals(1.235, org.apache.commons.math.util.MathUtils.round(1.2345, 3, java.math.BigDecimal.ROUND_HALF_UP), 0.0);727		junit.framework.Assert.assertEquals(-1.235, org.apache.commons.math.util.MathUtils.round(-1.2345, 3, java.math.BigDecimal.ROUND_HALF_UP), 0.0);728		junit.framework.Assert.assertEquals(-1.23, org.apache.commons.math.util.MathUtils.round(-1.23, 2, java.math.BigDecimal.ROUND_UNNECESSARY), 0.0);729		junit.framework.Assert.assertEquals(1.23, org.apache.commons.math.util.MathUtils.round(1.23, 2, java.math.BigDecimal.ROUND_UNNECESSARY), 0.0);730		try {731			org.apache.commons.math.util.MathUtils.round(1.234, 2, java.math.BigDecimal.ROUND_UNNECESSARY);732			junit.framework.Assert.fail();733		} catch (java.lang.ArithmeticException ex) {734		}735		junit.framework.Assert.assertEquals(1.24, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_UP), 0.0);736		junit.framework.Assert.assertEquals(1.235, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_UP), 0.0);737		junit.framework.Assert.assertEquals(1.2346, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_UP), 0.0);738		junit.framework.Assert.assertEquals(-1.24, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_UP), 0.0);739		junit.framework.Assert.assertEquals(-1.235, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_UP), 0.0);740		junit.framework.Assert.assertEquals(-1.2346, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_UP), 0.0);741		try {742			org.apache.commons.math.util.MathUtils.round(1.234, 2, 1923);743			junit.framework.Assert.fail();744		} catch (java.lang.IllegalArgumentException ex) {745		}746		junit.framework.Assert.assertEquals(39.25, org.apache.commons.math.util.MathUtils.round(39.245, 2, java.math.BigDecimal.ROUND_HALF_UP), 0.0);747		org.apache.commons.math.TestUtils.assertEquals(java.lang.Double.NaN, org.apache.commons.math.util.MathUtils.round(java.lang.Double.NaN, 2), 0.0);748		junit.framework.Assert.assertEquals(0.0, org.apache.commons.math.util.MathUtils.round(0.0, 2), 0.0);749		junit.framework.Assert.assertEquals(java.lang.Double.POSITIVE_INFINITY, org.apache.commons.math.util.MathUtils.round(java.lang.Double.POSITIVE_INFINITY, 2), 0.0);750		junit.framework.Assert.assertEquals(java.lang.Double.NEGATIVE_INFINITY, org.apache.commons.math.util.MathUtils.round(java.lang.Double.NEGATIVE_INFINITY, 2), 0.0);751	}752	public void testRoundFloat() {753		float x = 1.2345679F;754		junit.framework.Assert.assertEquals(1.23F, org.apache.commons.math.util.MathUtils.round(x, 2), 0.0);755		junit.framework.Assert.assertEquals(1.235F, org.apache.commons.math.util.MathUtils.round(x, 3), 0.0);756		junit.framework.Assert.assertEquals(1.2346F, org.apache.commons.math.util.MathUtils.round(x, 4), 0.0);757		junit.framework.Assert.assertEquals(30.1F, org.apache.commons.math.util.MathUtils.round(30.095F, 2), 0.0F);758		junit.framework.Assert.assertEquals(30.1F, org.apache.commons.math.util.MathUtils.round(30.095F, 1), 0.0F);759		junit.framework.Assert.assertEquals(50.09F, org.apache.commons.math.util.MathUtils.round(50.085F, 2), 0.0F);760		junit.framework.Assert.assertEquals(50.19F, org.apache.commons.math.util.MathUtils.round(50.185F, 2), 0.0F);761		junit.framework.Assert.assertEquals(50.01F, org.apache.commons.math.util.MathUtils.round(50.005F, 2), 0.0F);762		junit.framework.Assert.assertEquals(30.01F, org.apache.commons.math.util.MathUtils.round(30.005F, 2), 0.0F);763		junit.framework.Assert.assertEquals(30.65F, org.apache.commons.math.util.MathUtils.round(30.645F, 2), 0.0F);764		junit.framework.Assert.assertEquals(1.24F, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_CEILING), 0.0);765		junit.framework.Assert.assertEquals(1.235F, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_CEILING), 0.0);766		junit.framework.Assert.assertEquals(1.2346F, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_CEILING), 0.0);767		junit.framework.Assert.assertEquals(-1.23F, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_CEILING), 0.0);768		junit.framework.Assert.assertEquals(-1.234F, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_CEILING), 0.0);769		junit.framework.Assert.assertEquals(-1.2345F, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_CEILING), 0.0);770		junit.framework.Assert.assertEquals(1.23F, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_DOWN), 0.0);771		junit.framework.Assert.assertEquals(1.234F, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_DOWN), 0.0);772		junit.framework.Assert.assertEquals(1.2345F, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_DOWN), 0.0);773		junit.framework.Assert.assertEquals(-1.23F, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_DOWN), 0.0);774		junit.framework.Assert.assertEquals(-1.234F, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_DOWN), 0.0);775		junit.framework.Assert.assertEquals(-1.2345F, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_DOWN), 0.0);776		junit.framework.Assert.assertEquals(1.23F, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_FLOOR), 0.0);777		junit.framework.Assert.assertEquals(1.234F, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_FLOOR), 0.0);778		junit.framework.Assert.assertEquals(1.2345F, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_FLOOR), 0.0);779		junit.framework.Assert.assertEquals(-1.24F, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_FLOOR), 0.0);780		junit.framework.Assert.assertEquals(-1.235F, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_FLOOR), 0.0);781		junit.framework.Assert.assertEquals(-1.2346F, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_FLOOR), 0.0);782		junit.framework.Assert.assertEquals(1.23F, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);783		junit.framework.Assert.assertEquals(1.235F, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);784		junit.framework.Assert.assertEquals(1.2346F, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);785		junit.framework.Assert.assertEquals(-1.23F, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);786		junit.framework.Assert.assertEquals(-1.235F, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);787		junit.framework.Assert.assertEquals(-1.2346F, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);788		junit.framework.Assert.assertEquals(1.234F, org.apache.commons.math.util.MathUtils.round(1.2345F, 3, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);789		junit.framework.Assert.assertEquals(-1.234F, org.apache.commons.math.util.MathUtils.round(-1.2345F, 3, java.math.BigDecimal.ROUND_HALF_DOWN), 0.0);790		junit.framework.Assert.assertEquals(1.23F, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);791		junit.framework.Assert.assertEquals(1.235F, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);792		junit.framework.Assert.assertEquals(1.2346F, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);793		junit.framework.Assert.assertEquals(-1.23F, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);794		junit.framework.Assert.assertEquals(-1.235F, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);795		junit.framework.Assert.assertEquals(-1.2346F, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);796		junit.framework.Assert.assertEquals(1.234F, org.apache.commons.math.util.MathUtils.round(1.2345F, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);797		junit.framework.Assert.assertEquals(-1.234F, org.apache.commons.math.util.MathUtils.round(-1.2345F, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);798		junit.framework.Assert.assertEquals(1.236F, org.apache.commons.math.util.MathUtils.round(1.2355F, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);799		junit.framework.Assert.assertEquals(-1.236F, org.apache.commons.math.util.MathUtils.round(-1.2355F, 3, java.math.BigDecimal.ROUND_HALF_EVEN), 0.0);800		junit.framework.Assert.assertEquals(1.23F, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_HALF_UP), 0.0);801		junit.framework.Assert.assertEquals(1.235F, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_HALF_UP), 0.0);802		junit.framework.Assert.assertEquals(1.2346F, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_HALF_UP), 0.0);803		junit.framework.Assert.assertEquals(-1.23F, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_HALF_UP), 0.0);804		junit.framework.Assert.assertEquals(-1.235F, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_HALF_UP), 0.0);805		junit.framework.Assert.assertEquals(-1.2346F, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_HALF_UP), 0.0);806		junit.framework.Assert.assertEquals(1.235F, org.apache.commons.math.util.MathUtils.round(1.2345F, 3, java.math.BigDecimal.ROUND_HALF_UP), 0.0);807		junit.framework.Assert.assertEquals(-1.235F, org.apache.commons.math.util.MathUtils.round(-1.2345F, 3, java.math.BigDecimal.ROUND_HALF_UP), 0.0);808		junit.framework.Assert.assertEquals(-1.23F, org.apache.commons.math.util.MathUtils.round(-1.23F, 2, java.math.BigDecimal.ROUND_UNNECESSARY), 0.0);809		junit.framework.Assert.assertEquals(1.23F, org.apache.commons.math.util.MathUtils.round(1.23F, 2, java.math.BigDecimal.ROUND_UNNECESSARY), 0.0);810		try {811			org.apache.commons.math.util.MathUtils.round(1.234F, 2, java.math.BigDecimal.ROUND_UNNECESSARY);812			junit.framework.Assert.fail();813		} catch (java.lang.ArithmeticException ex) {814		}815		junit.framework.Assert.assertEquals(1.24F, org.apache.commons.math.util.MathUtils.round(x, 2, java.math.BigDecimal.ROUND_UP), 0.0);816		junit.framework.Assert.assertEquals(1.235F, org.apache.commons.math.util.MathUtils.round(x, 3, java.math.BigDecimal.ROUND_UP), 0.0);817		junit.framework.Assert.assertEquals(1.2346F, org.apache.commons.math.util.MathUtils.round(x, 4, java.math.BigDecimal.ROUND_UP), 0.0);818		junit.framework.Assert.assertEquals(-1.24F, org.apache.commons.math.util.MathUtils.round(-x, 2, java.math.BigDecimal.ROUND_UP), 0.0);819		junit.framework.Assert.assertEquals(-1.235F, org.apache.commons.math.util.MathUtils.round(-x, 3, java.math.BigDecimal.ROUND_UP), 0.0);820		junit.framework.Assert.assertEquals(-1.2346F, org.apache.commons.math.util.MathUtils.round(-x, 4, java.math.BigDecimal.ROUND_UP), 0.0);821		try {822			org.apache.commons.math.util.MathUtils.round(1.234F, 2, 1923);823			junit.framework.Assert.fail();824		} catch (java.lang.IllegalArgumentException ex) {825		}826		org.apache.commons.math.TestUtils.assertEquals(java.lang.Float.NaN, org.apache.commons.math.util.MathUtils.round(java.lang.Float.NaN, 2), 0.0F);827		junit.framework.Assert.assertEquals(0.0F, org.apache.commons.math.util.MathUtils.round(0.0F, 2), 0.0F);828		junit.framework.Assert.assertEquals(java.lang.Float.POSITIVE_INFINITY, org.apache.commons.math.util.MathUtils.round(java.lang.Float.POSITIVE_INFINITY, 2), 0.0F);829		junit.framework.Assert.assertEquals(java.lang.Float.NEGATIVE_INFINITY, org.apache.commons.math.util.MathUtils.round(java.lang.Float.NEGATIVE_INFINITY, 2), 0.0F);830	}831	public void testSignByte() {832		junit.framework.Assert.assertEquals(((byte)(1)), org.apache.commons.math.util.MathUtils.sign(((byte)(2))));833		junit.framework.Assert.assertEquals(((byte)(0)), org.apache.commons.math.util.MathUtils.sign(((byte)(0))));834		junit.framework.Assert.assertEquals(((byte)(-1)), org.apache.commons.math.util.MathUtils.sign(((byte)(-2))));835	}836	public void testSignDouble() {837		double delta = 0.0;838		junit.framework.Assert.assertEquals(1.0, org.apache.commons.math.util.MathUtils.sign(2.0), delta);839		junit.framework.Assert.assertEquals(0.0, org.apache.commons.math.util.MathUtils.sign(0.0), delta);840		junit.framework.Assert.assertEquals(-1.0, org.apache.commons.math.util.MathUtils.sign(-2.0), delta);841		org.apache.commons.math.TestUtils.assertSame(((-0.0) / 0.0), org.apache.commons.math.util.MathUtils.sign(java.lang.Double.NaN));842	}843	public void testSignFloat() {844		float delta = 0.0F;845		junit.framework.Assert.assertEquals(1.0F, org.apache.commons.math.util.MathUtils.sign(2.0F), delta);846		junit.framework.Assert.assertEquals(0.0F, org.apache.commons.math.util.MathUtils.sign(0.0F), delta);847		junit.framework.Assert.assertEquals(-1.0F, org.apache.commons.math.util.MathUtils.sign(-2.0F), delta);848		org.apache.commons.math.TestUtils.assertSame(java.lang.Float.NaN, org.apache.commons.math.util.MathUtils.sign(java.lang.Float.NaN));849	}850	public void testSignInt() {851		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.sign(2));852		junit.framework.Assert.assertEquals(0, org.apache.commons.math.util.MathUtils.sign(0));853		junit.framework.Assert.assertEquals(-1, org.apache.commons.math.util.MathUtils.sign(-2));854	}855	public void testSignLong() {856		junit.framework.Assert.assertEquals(1L, org.apache.commons.math.util.MathUtils.sign(2L));857		junit.framework.Assert.assertEquals(0L, org.apache.commons.math.util.MathUtils.sign(0L));858		junit.framework.Assert.assertEquals(-1L, org.apache.commons.math.util.MathUtils.sign(-2L));859	}860	public void testSignShort() {861		junit.framework.Assert.assertEquals(((short)(1)), org.apache.commons.math.util.MathUtils.sign(((short)(2))));862		junit.framework.Assert.assertEquals(((short)(0)), org.apache.commons.math.util.MathUtils.sign(((short)(0))));863		junit.framework.Assert.assertEquals(((short)(-1)), org.apache.commons.math.util.MathUtils.sign(((short)(-2))));864	}865	public void testSinh() {866		double x = 3.0;867		double expected = 10.01787;868		junit.framework.Assert.assertEquals(expected, org.apache.commons.math.util.MathUtils.sinh(x), 1.0E-5);869	}870	public void testSinhNaN() {871		junit.framework.Assert.assertTrue(java.lang.Double.isNaN(org.apache.commons.math.util.MathUtils.sinh(java.lang.Double.NaN)));872	}873	public void testSubAndCheck() {874		int big = java.lang.Integer.MAX_VALUE;875		int bigNeg = java.lang.Integer.MIN_VALUE;876		junit.framework.Assert.assertEquals(big, org.apache.commons.math.util.MathUtils.subAndCheck(big, 0));877		junit.framework.Assert.assertEquals((bigNeg + 1), org.apache.commons.math.util.MathUtils.subAndCheck(bigNeg, -1));878		junit.framework.Assert.assertEquals(-1, org.apache.commons.math.util.MathUtils.subAndCheck(bigNeg, -big));879		try {880			org.apache.commons.math.util.MathUtils.subAndCheck(big, -1);881			junit.framework.Assert.fail("Expecting ArithmeticException");882		} catch (java.lang.ArithmeticException ex) {883		}884		try {885			org.apache.commons.math.util.MathUtils.subAndCheck(bigNeg, 1);886			junit.framework.Assert.fail("Expecting ArithmeticException");887		} catch (java.lang.ArithmeticException ex) {888		}889	}890	public void testSubAndCheckErrorMessage() {891		int big = java.lang.Integer.MAX_VALUE;892		try {893			org.apache.commons.math.util.MathUtils.subAndCheck(big, -1);894			junit.framework.Assert.fail("Expecting ArithmeticException");895		} catch (java.lang.ArithmeticException ex) {896			junit.framework.Assert.assertEquals("overflow: subtract", ex.getMessage());897		}898	}899	public void testSubAndCheckLong() {900		long max = java.lang.Long.MAX_VALUE;901		long min = java.lang.Long.MIN_VALUE;902		junit.framework.Assert.assertEquals(max, org.apache.commons.math.util.MathUtils.subAndCheck(max, 0));903		junit.framework.Assert.assertEquals(min, org.apache.commons.math.util.MathUtils.subAndCheck(min, 0));904		junit.framework.Assert.assertEquals(-max, org.apache.commons.math.util.MathUtils.subAndCheck(0, max));905		junit.framework.Assert.assertEquals((min + 1), org.apache.commons.math.util.MathUtils.subAndCheck(min, -1));906		junit.framework.Assert.assertEquals(-1, org.apache.commons.math.util.MathUtils.subAndCheck(((-max) - 1), -max));907		junit.framework.Assert.assertEquals(max, org.apache.commons.math.util.MathUtils.subAndCheck(-1, ((-1) - max)));908		testSubAndCheckLongFailure(0L, min);909		testSubAndCheckLongFailure(max, -1L);910		testSubAndCheckLongFailure(min, 1L);911	}912	private void testSubAndCheckLongFailure(long a, long b) {913		try {914			org.apache.commons.math.util.MathUtils.subAndCheck(a, b);915			junit.framework.Assert.fail("Expecting ArithmeticException");916		} catch (java.lang.ArithmeticException ex) {917		}918	}919	public void testPow() {920		junit.framework.Assert.assertEquals(1801088541, org.apache.commons.math.util.MathUtils.pow(21, 7));921		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.pow(21, 0));922		try {923			org.apache.commons.math.util.MathUtils.pow(21, -7);924			junit.framework.Assert.fail("Expecting IllegalArgumentException");925		} catch (java.lang.IllegalArgumentException e) {926		}927		junit.framework.Assert.assertEquals(1801088541, org.apache.commons.math.util.MathUtils.pow(21, 7L));928		junit.framework.Assert.assertEquals(1, org.apache.commons.math.util.MathUtils.pow(21, 0L));929		try {930			org.apache.commons.math.util.MathUtils.pow(21, -7L);931			junit.framework.Assert.fail("Expecting IllegalArgumentException");932		} catch (java.lang.IllegalArgumentException e) {933		}934		junit.framework.Assert.assertEquals(1801088541L, org.apache.commons.math.util.MathUtils.pow(21L, 7));935		junit.framework.Assert.assertEquals(1L, org.apache.commons.math.util.MathUtils.pow(21L, 0));936		try {937			org.apache.commons.math.util.MathUtils.pow(21L, -7);938			junit.framework.Assert.fail("Expecting IllegalArgumentException");939		} catch (java.lang.IllegalArgumentException e) {940		}941		junit.framework.Assert.assertEquals(1801088541L, org.apache.commons.math.util.MathUtils.pow(21L, 7L));942		junit.framework.Assert.assertEquals(1L, org.apache.commons.math.util.MathUtils.pow(21L, 0L));943		try {944			org.apache.commons.math.util.MathUtils.pow(21L, -7L);945			junit.framework.Assert.fail("Expecting IllegalArgumentException");946		} catch (java.lang.IllegalArgumentException e) {947		}948		java.math.BigInteger twentyOne = java.math.BigInteger.valueOf(21L);949		junit.framework.Assert.assertEquals(java.math.BigInteger.valueOf(1801088541L), org.apache.commons.math.util.MathUtils.pow(twentyOne, 7));950		junit.framework.Assert.assertEquals(java.math.BigInteger.ONE, org.apache.commons.math.util.MathUtils.pow(twentyOne, 0));951		try {952			org.apache.commons.math.util.MathUtils.pow(twentyOne, -7);953			junit.framework.Assert.fail("Expecting IllegalArgumentException");954		} catch (java.lang.IllegalArgumentException e) {955		}956		junit.framework.Assert.assertEquals(java.math.BigInteger.valueOf(1801088541L), org.apache.commons.math.util.MathUtils.pow(twentyOne, 7L));957		junit.framework.Assert.assertEquals(java.math.BigInteger.ONE, org.apache.commons.math.util.MathUtils.pow(twentyOne, 0L));958		try {959			org.apache.commons.math.util.MathUtils.pow(twentyOne, -7L);960			junit.framework.Assert.fail("Expecting IllegalArgumentException");961		} catch (java.lang.IllegalArgumentException e) {962		}963		junit.framework.Assert.assertEquals(java.math.BigInteger.valueOf(1801088541L), org.apache.commons.math.util.MathUtils.pow(twentyOne, java.math.BigInteger.valueOf(7L)));964		junit.framework.Assert.assertEquals(java.math.BigInteger.ONE, org.apache.commons.math.util.MathUtils.pow(twentyOne, java.math.BigInteger.ZERO));965		try {966			org.apache.commons.math.util.MathUtils.pow(twentyOne, java.math.BigInteger.valueOf(-7L));967			junit.framework.Assert.fail("Expecting IllegalArgumentException");968		} catch (java.lang.IllegalArgumentException e) {969		}970		java.math.BigInteger bigOne = new java.math.BigInteger(("1543786922199448028351389769265814882661837148" + ("4763915343722775611762713982220306372888519211" + "560905579993523402015636025177602059044911261")));971		junit.framework.Assert.assertEquals(bigOne, org.apache.commons.math.util.MathUtils.pow(twentyOne, 103));972		junit.framework.Assert.assertEquals(bigOne, org.apache.commons.math.util.MathUtils.pow(twentyOne, 103L));973		junit.framework.Assert.assertEquals(bigOne, org.apache.commons.math.util.MathUtils.pow(twentyOne, java.math.BigInteger.valueOf(103L)));974	}975	public void testL1DistanceDouble() {976		double[] p1 = new double[]{ 2.5 , 0.0 };977		double[] p2 = new double[]{ -0.5 , 4.0 };978		junit.framework.Assert.assertEquals(7.0, org.apache.commons.math.util.MathUtils.distance1(p1, p2));979	}980	public void testL1DistanceInt() {981		int[] p1 = new int[]{ 3 , 0 };982		int[] p2 = new int[]{ 0 , 4 };983		junit.framework.Assert.assertEquals(7, org.apache.commons.math.util.MathUtils.distance1(p1, p2));984	}985	public void testL2DistanceDouble() {986		double[] p1 = new double[]{ 2.5 , 0.0 };987		double[] p2 = new double[]{ -0.5 , 4.0 };988		junit.framework.Assert.assertEquals(5.0, org.apache.commons.math.util.MathUtils.distance(p1, p2));989	}990	public void testL2DistanceInt() {991		int[] p1 = new int[]{ 3 , 0 };992		int[] p2 = new int[]{ 0 , 4 };993		junit.framework.Assert.assertEquals(5.0, org.apache.commons.math.util.MathUtils.distance(p1, p2));994	}995	public void testLInfDistanceDouble() {996		double[] p1 = new double[]{ 2.5 , 0.0 };997		double[] p2 = new double[]{ -0.5 , 4.0 };998		junit.framework.Assert.assertEquals(4.0, org.apache.commons.math.util.MathUtils.distanceInf(p1, p2));999	}1000	public void testLInfDistanceInt() {1001		int[] p1 = new int[]{ 3 , 0 };1002		int[] p2 = new int[]{ 0 , 4 };1003		junit.framework.Assert.assertEquals(4, org.apache.commons.math.util.MathUtils.distanceInf(p1, p2));1004	}1005	public void testCheckOrder() {1006		org.apache.commons.math.util.MathUtils.checkOrder(new double[]{ -15 , -5.5 , -1 , 2 , 15 }, 1, true);1007		org.apache.commons.math.util.MathUtils.checkOrder(new double[]{ -15 , -5.5 , -1 , 2 , 2 }, 1, false);1008		org.apache.commons.math.util.MathUtils.checkOrder(new double[]{ 3 , -5.5 , -11 , -27.5 }, -1, true);1009		org.apache.commons.math.util.MathUtils.checkOrder(new double[]{ 3 , 0 , 0 , -5.5 , -11 , -27.5 }, -1, false);1010		try {1011			org.apache.commons.math.util.MathUtils.checkOrder(new double[]{ -15 , -5.5 , -1 , -1 , 2 , 15 }, 1, true);1012			junit.framework.Assert.fail("an exception should have been thrown");1013		} catch (java.lang.IllegalArgumentException e) {1014		}1015		try {1016			org.apache.commons.math.util.MathUtils.checkOrder(new double[]{ -15 , -5.5 , -1 , -2 , 2 }, 1, false);1017			junit.framework.Assert.fail("an exception should have been thrown");...

...17		float defaultExpansionFactor = 2.0F;18		float defaultContractionCriteria = 2.5F;19		int defaultMode = org.apache.commons.math.util.ResizableDoubleArray.MULTIPLICATIVE_MODE;20		org.apache.commons.math.util.ResizableDoubleArray testDa = new org.apache.commons.math.util.ResizableDoubleArray(2);21		junit.framework.Assert.assertEquals(0, testDa.getNumElements());22		junit.framework.Assert.assertEquals(2, testDa.getInternalLength());23		junit.framework.Assert.assertEquals(defaultExpansionFactor, testDa.getExpansionFactor(), 0);24		junit.framework.Assert.assertEquals(defaultContractionCriteria, testDa.getContractionCriteria(), 0);25		junit.framework.Assert.assertEquals(defaultMode, testDa.getExpansionMode());26		try {27			da = new org.apache.commons.math.util.ResizableDoubleArray(-1);28			junit.framework.Assert.fail("Expecting IllegalArgumentException");29		} catch (java.lang.IllegalArgumentException ex) {30		}31		testDa = new org.apache.commons.math.util.ResizableDoubleArray(2 , 2.0F);32		junit.framework.Assert.assertEquals(0, testDa.getNumElements());33		junit.framework.Assert.assertEquals(2, testDa.getInternalLength());34		junit.framework.Assert.assertEquals(defaultExpansionFactor, testDa.getExpansionFactor(), 0);35		junit.framework.Assert.assertEquals(defaultContractionCriteria, testDa.getContractionCriteria(), 0);36		junit.framework.Assert.assertEquals(defaultMode, testDa.getExpansionMode());37		try {38			da = new org.apache.commons.math.util.ResizableDoubleArray(2 , 0.5F);39			junit.framework.Assert.fail("Expecting IllegalArgumentException");40		} catch (java.lang.IllegalArgumentException ex) {41		}42		testDa = new org.apache.commons.math.util.ResizableDoubleArray(2 , 3.0F);43		junit.framework.Assert.assertEquals(3.0F, testDa.getExpansionFactor(), 0);44		junit.framework.Assert.assertEquals(3.5F, testDa.getContractionCriteria(), 0);45		testDa = new org.apache.commons.math.util.ResizableDoubleArray(2 , 2.0F , 3.0F);46		junit.framework.Assert.assertEquals(0, testDa.getNumElements());47		junit.framework.Assert.assertEquals(2, testDa.getInternalLength());48		junit.framework.Assert.assertEquals(defaultExpansionFactor, testDa.getExpansionFactor(), 0);49		junit.framework.Assert.assertEquals(3.0F, testDa.getContractionCriteria(), 0);50		junit.framework.Assert.assertEquals(defaultMode, testDa.getExpansionMode());51		try {52			da = new org.apache.commons.math.util.ResizableDoubleArray(2 , 2.0F , 1.5F);53			junit.framework.Assert.fail("Expecting IllegalArgumentException");54		} catch (java.lang.IllegalArgumentException ex) {55		}56		testDa = new org.apache.commons.math.util.ResizableDoubleArray(2 , 2.0F , 3.0F , org.apache.commons.math.util.ResizableDoubleArray.ADDITIVE_MODE);57		junit.framework.Assert.assertEquals(0, testDa.getNumElements());58		junit.framework.Assert.assertEquals(2, testDa.getInternalLength());59		junit.framework.Assert.assertEquals(defaultExpansionFactor, testDa.getExpansionFactor(), 0);60		junit.framework.Assert.assertEquals(3.0F, testDa.getContractionCriteria(), 0);61		junit.framework.Assert.assertEquals(org.apache.commons.math.util.ResizableDoubleArray.ADDITIVE_MODE, testDa.getExpansionMode());62		try {63			da = new org.apache.commons.math.util.ResizableDoubleArray(2 , 2.0F , 2.5F , -1);64			junit.framework.Assert.fail("Expecting IllegalArgumentException");65		} catch (java.lang.IllegalArgumentException ex) {66		}67		testDa = new org.apache.commons.math.util.ResizableDoubleArray(2 , 2.0F , 3.0F , org.apache.commons.math.util.ResizableDoubleArray.ADDITIVE_MODE);68		testDa.addElement(2.0);69		testDa.addElement(3.2);70		org.apache.commons.math.util.ResizableDoubleArray copyDa = new org.apache.commons.math.util.ResizableDoubleArray(testDa);71		junit.framework.Assert.assertEquals(copyDa, testDa);72		junit.framework.Assert.assertEquals(testDa, copyDa);73	}74	public void testSetElementArbitraryExpansion() {75		da.addElement(2.0);76		da.addElement(4.0);77		da.addElement(6.0);78		da.setElement(1, 3.0);79		da.setElement(1000, 3.4);80		junit.framework.Assert.assertEquals("The number of elements should now be 1001, it isn't", da.getNumElements(), 1001);81		junit.framework.Assert.assertEquals("Uninitialized Elements are default value of 0.0, index 766 wasn't", 0.0, da.getElement(760), java.lang.Double.MIN_VALUE);82		junit.framework.Assert.assertEquals("The 1000th index should be 3.4, it isn't", 3.4, da.getElement(1000), java.lang.Double.MIN_VALUE);83		junit.framework.Assert.assertEquals("The 0th index should be 2.0, it isn't", 2.0, da.getElement(0), java.lang.Double.MIN_VALUE);84		da.clear();85		da.addElement(2.0);86		da.addElement(4.0);87		da.addElement(6.0);88		junit.framework.Assert.assertEquals(4, ((org.apache.commons.math.util.ResizableDoubleArray)(da)).getInternalLength());89		junit.framework.Assert.assertEquals(3, da.getNumElements());90		da.setElement(3, 7.0);91		junit.framework.Assert.assertEquals(4, ((org.apache.commons.math.util.ResizableDoubleArray)(da)).getInternalLength());92		junit.framework.Assert.assertEquals(4, da.getNumElements());93		da.setElement(10, 10.0);94		junit.framework.Assert.assertEquals(11, ((org.apache.commons.math.util.ResizableDoubleArray)(da)).getInternalLength());95		junit.framework.Assert.assertEquals(11, da.getNumElements());96		da.setElement(9, 10.0);97		junit.framework.Assert.assertEquals(11, ((org.apache.commons.math.util.ResizableDoubleArray)(da)).getInternalLength());98		junit.framework.Assert.assertEquals(11, da.getNumElements());99		try {100			da.setElement(-2, 3);101			junit.framework.Assert.fail("Expecting ArrayIndexOutOfBoundsException for negative index");102		} catch (java.lang.ArrayIndexOutOfBoundsException ex) {103		}104		org.apache.commons.math.util.ResizableDoubleArray testDa = new org.apache.commons.math.util.ResizableDoubleArray(2 , 2.0F , 3.0F , org.apache.commons.math.util.ResizableDoubleArray.ADDITIVE_MODE);105		junit.framework.Assert.assertEquals(2, testDa.getInternalLength());106		testDa.addElement(1.0);107		testDa.addElement(1.0);108		junit.framework.Assert.assertEquals(2, testDa.getInternalLength());109		testDa.addElement(1.0);110		junit.framework.Assert.assertEquals(4, testDa.getInternalLength());111	}112	@java.lang.Override113	public void testAdd1000() {114		super.testAdd1000();115		junit.framework.Assert.assertEquals(("Internal Storage length should be 1024 if we started out with initial capacity of " + "16 and an expansion factor of 2.0"), 1024, ((org.apache.commons.math.util.ResizableDoubleArray)(da)).getInternalLength());116	}117	@java.lang.Override118	public void testAddElementRolling() {119		super.testAddElementRolling();120		da.clear();121		da.addElement(1);122		da.addElement(2);123		da.addElementRolling(3);124		junit.framework.Assert.assertEquals(3, da.getElement(1), 0);125		da.addElementRolling(4);126		junit.framework.Assert.assertEquals(3, da.getElement(0), 0);127		junit.framework.Assert.assertEquals(4, da.getElement(1), 0);128		da.addElement(5);129		junit.framework.Assert.assertEquals(5, da.getElement(2), 0);130		da.addElementRolling(6);131		junit.framework.Assert.assertEquals(4, da.getElement(0), 0);132		junit.framework.Assert.assertEquals(5, da.getElement(1), 0);133		junit.framework.Assert.assertEquals(6, da.getElement(2), 0);134		org.apache.commons.math.util.ResizableDoubleArray testDa = new org.apache.commons.math.util.ResizableDoubleArray(2 , 2.0F , 2.5F , org.apache.commons.math.util.ResizableDoubleArray.ADDITIVE_MODE);135		junit.framework.Assert.assertEquals(2, testDa.getInternalLength());136		testDa.addElement(1.0);137		testDa.addElement(2.0);138		testDa.addElement(3.0);139		junit.framework.Assert.assertEquals(1.0, testDa.getElement(0), 0);140		junit.framework.Assert.assertEquals(2.0, testDa.getElement(1), 0);141		junit.framework.Assert.assertEquals(3.0, testDa.getElement(2), 0);142		junit.framework.Assert.assertEquals(4, testDa.getInternalLength());143		junit.framework.Assert.assertEquals(3, testDa.getNumElements());144		testDa.addElementRolling(4.0);145		junit.framework.Assert.assertEquals(2.0, testDa.getElement(0), 0);146		junit.framework.Assert.assertEquals(3.0, testDa.getElement(1), 0);147		junit.framework.Assert.assertEquals(4.0, testDa.getElement(2), 0);148		junit.framework.Assert.assertEquals(4, testDa.getInternalLength());149		junit.framework.Assert.assertEquals(3, testDa.getNumElements());150		testDa.addElementRolling(5.0);151		junit.framework.Assert.assertEquals(3.0, testDa.getElement(0), 0);152		junit.framework.Assert.assertEquals(4.0, testDa.getElement(1), 0);153		junit.framework.Assert.assertEquals(5.0, testDa.getElement(2), 0);154		junit.framework.Assert.assertEquals(4, testDa.getInternalLength());155		junit.framework.Assert.assertEquals(3, testDa.getNumElements());156		try {157			testDa.getElement(4);158			junit.framework.Assert.fail("Expecting ArrayIndexOutOfBoundsException");159		} catch (java.lang.ArrayIndexOutOfBoundsException ex) {160		}161		try {162			testDa.getElement(-1);163			junit.framework.Assert.fail("Expecting ArrayIndexOutOfBoundsException");164		} catch (java.lang.ArrayIndexOutOfBoundsException ex) {165		}166	}167	public void testSetNumberOfElements() {168		da.addElement(1.0);169		da.addElement(1.0);170		da.addElement(1.0);171		da.addElement(1.0);172		da.addElement(1.0);173		da.addElement(1.0);174		junit.framework.Assert.assertEquals("Number of elements should equal 6", da.getNumElements(), 6);175		((org.apache.commons.math.util.ResizableDoubleArray)(da)).setNumElements(3);176		junit.framework.Assert.assertEquals("Number of elements should equal 3", da.getNumElements(), 3);177		try {178			((org.apache.commons.math.util.ResizableDoubleArray)(da)).setNumElements(-3);179			junit.framework.Assert.fail("Setting number of elements to negative should've thrown an exception");180		} catch (java.lang.IllegalArgumentException iae) {181		}182		((org.apache.commons.math.util.ResizableDoubleArray)(da)).setNumElements(1024);183		junit.framework.Assert.assertEquals("Number of elements should now be 1024", da.getNumElements(), 1024);184		junit.framework.Assert.assertEquals("Element 453 should be a default double", da.getElement(453), 0.0, java.lang.Double.MIN_VALUE);185	}186	public void testWithInitialCapacity() {187		org.apache.commons.math.util.ResizableDoubleArray eDA2 = new org.apache.commons.math.util.ResizableDoubleArray(2);188		junit.framework.Assert.assertEquals("Initial number of elements should be 0", 0, eDA2.getNumElements());189		org.apache.commons.math.random.RandomData randomData = new org.apache.commons.math.random.RandomDataImpl();190		int iterations = randomData.nextInt(100, 1000);191		for (int i = 0 ; i < iterations ; i++) {192			eDA2.addElement(i);193		}194		junit.framework.Assert.assertEquals(("Number of elements should be equal to " + iterations), iterations, eDA2.getNumElements());195		eDA2.addElement(2.0);196		junit.framework.Assert.assertEquals(("Number of elements should be equals to " + (iterations + 1)), (iterations + 1), eDA2.getNumElements());197	}198	public void testWithInitialCapacityAndExpansionFactor() {199		org.apache.commons.math.util.ResizableDoubleArray eDA3 = new org.apache.commons.math.util.ResizableDoubleArray(3 , 3.0F , 3.5F);200		junit.framework.Assert.assertEquals("Initial number of elements should be 0", 0, eDA3.getNumElements());201		org.apache.commons.math.random.RandomData randomData = new org.apache.commons.math.random.RandomDataImpl();202		int iterations = randomData.nextInt(100, 3000);203		for (int i = 0 ; i < iterations ; i++) {204			eDA3.addElement(i);205		}206		junit.framework.Assert.assertEquals(("Number of elements should be equal to " + iterations), iterations, eDA3.getNumElements());207		eDA3.addElement(2.0);208		junit.framework.Assert.assertEquals(("Number of elements should be equals to " + (iterations + 1)), (iterations + 1), eDA3.getNumElements());209		junit.framework.Assert.assertEquals("Expansion factor should equal 3.0", 3.0F, eDA3.getExpansionFactor(), java.lang.Double.MIN_VALUE);210	}211	public void testDiscard() {212		da.addElement(2.0);213		da.addElement(2.0);214		da.addElement(2.0);215		da.addElement(2.0);216		da.addElement(2.0);217		da.addElement(2.0);218		da.addElement(2.0);219		da.addElement(2.0);220		da.addElement(2.0);221		da.addElement(2.0);222		da.addElement(2.0);223		junit.framework.Assert.assertEquals("Number of elements should be 11", 11, da.getNumElements());224		((org.apache.commons.math.util.ResizableDoubleArray)(da)).discardFrontElements(5);225		junit.framework.Assert.assertEquals("Number of elements should be 6", 6, da.getNumElements());226		da.addElement(2.0);227		da.addElement(2.0);228		da.addElement(2.0);229		da.addElement(2.0);230		junit.framework.Assert.assertEquals("Number of elements should be 10", 10, da.getNumElements());231		((org.apache.commons.math.util.ResizableDoubleArray)(da)).discardMostRecentElements(2);232		junit.framework.Assert.assertEquals("Number of elements should be 8", 8, da.getNumElements());233		try {234			((org.apache.commons.math.util.ResizableDoubleArray)(da)).discardFrontElements(-1);235			junit.framework.Assert.fail("Trying to discard a negative number of element is not allowed");236		} catch (java.lang.Exception e) {237		}238		try {239			((org.apache.commons.math.util.ResizableDoubleArray)(da)).discardMostRecentElements(-1);240			junit.framework.Assert.fail("Trying to discard a negative number of element is not allowed");241		} catch (java.lang.Exception e) {242		}243		try {244			((org.apache.commons.math.util.ResizableDoubleArray)(da)).discardFrontElements(10000);245			junit.framework.Assert.fail("You can't discard more elements than the array contains");246		} catch (java.lang.Exception e) {247		}248		try {249			((org.apache.commons.math.util.ResizableDoubleArray)(da)).discardMostRecentElements(10000);250			junit.framework.Assert.fail("You can't discard more elements than the array contains");251		} catch (java.lang.Exception e) {252		}253	}254	public void testSubstitute() {255		da.addElement(2.0);256		da.addElement(2.0);257		da.addElement(2.0);258		da.addElement(2.0);259		da.addElement(2.0);260		da.addElement(2.0);261		da.addElement(2.0);262		da.addElement(2.0);263		da.addElement(2.0);264		da.addElement(2.0);265		da.addElement(2.0);266		junit.framework.Assert.assertEquals("Number of elements should be 11", 11, da.getNumElements());267		((org.apache.commons.math.util.ResizableDoubleArray)(da)).substituteMostRecentElement(24);268		junit.framework.Assert.assertEquals("Number of elements should be 11", 11, da.getNumElements());269		try {270			((org.apache.commons.math.util.ResizableDoubleArray)(da)).discardMostRecentElements(10);271		} catch (java.lang.Exception e) {272			junit.framework.Assert.fail("Trying to discard a negative number of element is not allowed");273		}274		((org.apache.commons.math.util.ResizableDoubleArray)(da)).substituteMostRecentElement(24);275		junit.framework.Assert.assertEquals("Number of elements should be 1", 1, da.getNumElements());276	}277	public void testMutators() {278		((org.apache.commons.math.util.ResizableDoubleArray)(da)).setContractionCriteria(10.0F);279		junit.framework.Assert.assertEquals(10.0F, ((org.apache.commons.math.util.ResizableDoubleArray)(da)).getContractionCriteria(), 0);280		((org.apache.commons.math.util.ResizableDoubleArray)(da)).setExpansionFactor(8.0F);281		junit.framework.Assert.assertEquals(8.0F, ((org.apache.commons.math.util.ResizableDoubleArray)(da)).getExpansionFactor(), 0);282		try {283			((org.apache.commons.math.util.ResizableDoubleArray)(da)).setExpansionFactor(11.0F);284			junit.framework.Assert.fail("Expecting IllegalArgumentException");285		} catch (java.lang.IllegalArgumentException ex) {286		}287		((org.apache.commons.math.util.ResizableDoubleArray)(da)).setExpansionMode(org.apache.commons.math.util.ResizableDoubleArray.ADDITIVE_MODE);288		junit.framework.Assert.assertEquals(org.apache.commons.math.util.ResizableDoubleArray.ADDITIVE_MODE, ((org.apache.commons.math.util.ResizableDoubleArray)(da)).getExpansionMode());289		try {290			((org.apache.commons.math.util.ResizableDoubleArray)(da)).setExpansionMode(-1);291			junit.framework.Assert.fail("Expecting IllegalArgumentException");292		} catch (java.lang.IllegalArgumentException ex) {293		}294	}295	public void testEqualsAndHashCode() throws java.lang.Exception {296		org.apache.commons.math.util.ResizableDoubleArray first = new org.apache.commons.math.util.ResizableDoubleArray();297		java.lang.Double other = new java.lang.Double(2);298		junit.framework.Assert.assertFalse(first.equals(other));299		other = null;300		junit.framework.Assert.assertFalse(first.equals(other));301		junit.framework.Assert.assertTrue(first.equals(first));302		org.apache.commons.math.util.ResizableDoubleArray second = new org.apache.commons.math.util.ResizableDoubleArray();303		verifyEquality(first, second);304		org.apache.commons.math.util.ResizableDoubleArray third = new org.apache.commons.math.util.ResizableDoubleArray(3 , 2.0F , 2.0F);305		verifyInequality(third, first);306		org.apache.commons.math.util.ResizableDoubleArray fourth = new org.apache.commons.math.util.ResizableDoubleArray(3 , 2.0F , 2.0F);307		org.apache.commons.math.util.ResizableDoubleArray fifth = new org.apache.commons.math.util.ResizableDoubleArray(2 , 2.0F , 2.0F);308		verifyEquality(third, fourth);309		verifyInequality(third, fifth);310		third.addElement(4.1);311		third.addElement(4.2);312		third.addElement(4.3);313		fourth.addElement(4.1);314		fourth.addElement(4.2);315		fourth.addElement(4.3);316		verifyEquality(third, fourth);317		fourth.addElement(4.4);318		verifyInequality(third, fourth);319		third.addElement(4.4);320		verifyEquality(third, fourth);321		fourth.addElement(4.4);322		verifyInequality(third, fourth);323		third.addElement(4.4);324		verifyEquality(third, fourth);325		fourth.addElementRolling(4.5);326		third.addElementRolling(4.5);327		verifyEquality(third, fourth);328		third.discardFrontElements(1);329		verifyInequality(third, fourth);330		fourth.discardFrontElements(1);331		verifyEquality(third, fourth);332		third.discardMostRecentElements(2);333		fourth.discardMostRecentElements(2);334		verifyEquality(third, fourth);335		third.addElement(18);336		fourth.addElement(17);337		third.addElement(17);338		fourth.addElement(18);339		verifyInequality(third, fourth);340		org.apache.commons.math.util.ResizableDoubleArray.copy(fourth, fifth);341		verifyEquality(fourth, fifth);342		verifyEquality(fourth, new org.apache.commons.math.util.ResizableDoubleArray(fourth));343		verifyEquality(fourth, fourth.copy());344	}345	private void verifyEquality(org.apache.commons.math.util.ResizableDoubleArray a, org.apache.commons.math.util.ResizableDoubleArray b) {346		junit.framework.Assert.assertTrue(b.equals(a));347		junit.framework.Assert.assertTrue(a.equals(b));348		junit.framework.Assert.assertEquals(a.hashCode(), b.hashCode());349	}350	private void verifyInequality(org.apache.commons.math.util.ResizableDoubleArray a, org.apache.commons.math.util.ResizableDoubleArray b) {351		junit.framework.Assert.assertFalse(b.equals(a));352		junit.framework.Assert.assertFalse(a.equals(b));353		junit.framework.Assert.assertFalse(((a.hashCode()) == (b.hashCode())));354	}355}...

...8		org.apache.commons.math.analysis.UnivariateRealFunction f = new org.apache.commons.math.analysis.SinFunction();9		double result;10		org.apache.commons.math.analysis.solvers.UnivariateRealSolver solver = new org.apache.commons.math.analysis.solvers.BrentSolver(f);11		result = solver.solve(3, 4);12		junit.framework.Assert.assertEquals(result, java.lang.Math.PI, solver.getAbsoluteAccuracy());13		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 5));14		result = solver.solve(1, 4);15		junit.framework.Assert.assertEquals(result, java.lang.Math.PI, solver.getAbsoluteAccuracy());16		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 6));17		solver = new org.apache.commons.math.analysis.solvers.SecantSolver(f);18		result = solver.solve(3, 4);19		junit.framework.Assert.assertEquals(result, java.lang.Math.PI, solver.getAbsoluteAccuracy());20		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 5));21		result = solver.solve(1, 4);22		junit.framework.Assert.assertEquals(result, java.lang.Math.PI, solver.getAbsoluteAccuracy());23		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 6));24		junit.framework.Assert.assertEquals(result, solver.getResult(), 0);25	}26	public void testSinZero() throws org.apache.commons.math.MathException {27		org.apache.commons.math.analysis.UnivariateRealFunction f = new org.apache.commons.math.analysis.SinFunction();28		double result;29		org.apache.commons.math.analysis.solvers.UnivariateRealSolver solver = new org.apache.commons.math.analysis.solvers.BrentSolver();30		result = solver.solve(f, 3, 4);31		junit.framework.Assert.assertEquals(result, java.lang.Math.PI, solver.getAbsoluteAccuracy());32		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 5));33		result = solver.solve(f, 1, 4);34		junit.framework.Assert.assertEquals(result, java.lang.Math.PI, solver.getAbsoluteAccuracy());35		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 6));36		solver = new org.apache.commons.math.analysis.solvers.SecantSolver();37		result = solver.solve(f, 3, 4);38		junit.framework.Assert.assertEquals(result, java.lang.Math.PI, solver.getAbsoluteAccuracy());39		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 5));40		result = solver.solve(f, 1, 4);41		junit.framework.Assert.assertEquals(result, java.lang.Math.PI, solver.getAbsoluteAccuracy());42		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 6));43		junit.framework.Assert.assertEquals(result, solver.getResult(), 0);44	}45	public void testQuinticZero() throws org.apache.commons.math.MathException {46		org.apache.commons.math.analysis.UnivariateRealFunction f = new org.apache.commons.math.analysis.QuinticFunction();47		double result;48		org.apache.commons.math.analysis.solvers.UnivariateRealSolver solver = new org.apache.commons.math.analysis.solvers.BrentSolver();49		result = solver.solve(f, -0.2, 0.2);50		junit.framework.Assert.assertEquals(result, 0, solver.getAbsoluteAccuracy());51		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 2));52		result = solver.solve(f, -0.1, 0.3);53		junit.framework.Assert.assertEquals(result, 0, solver.getAbsoluteAccuracy());54		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 6));55		result = solver.solve(f, -0.3, 0.45);56		junit.framework.Assert.assertEquals(result, 0, solver.getAbsoluteAccuracy());57		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 7));58		result = solver.solve(f, 0.3, 0.7);59		junit.framework.Assert.assertEquals(result, 0.5, solver.getAbsoluteAccuracy());60		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 7));61		result = solver.solve(f, 0.2, 0.6);62		junit.framework.Assert.assertEquals(result, 0.5, solver.getAbsoluteAccuracy());63		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 7));64		result = solver.solve(f, 0.05, 0.95);65		junit.framework.Assert.assertEquals(result, 0.5, solver.getAbsoluteAccuracy());66		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 9));67		result = solver.solve(f, 0.85, 1.25);68		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());69		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 9));70		result = solver.solve(f, 0.8, 1.2);71		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());72		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 9));73		result = solver.solve(f, 0.85, 1.75);74		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());75		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 11));76		result = solver.solve(f, 0.55, 1.45);77		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());78		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 8));79		result = solver.solve(f, 0.85, 5);80		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());81		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 13));82		solver = new org.apache.commons.math.analysis.solvers.SecantSolver();83		result = solver.solve(f, -0.2, 0.2);84		junit.framework.Assert.assertEquals(result, 0, solver.getAbsoluteAccuracy());85		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 2));86		result = solver.solve(f, -0.1, 0.3);87		junit.framework.Assert.assertEquals(result, 0, solver.getAbsoluteAccuracy());88		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 6));89		result = solver.solve(f, -0.3, 0.45);90		junit.framework.Assert.assertEquals(result, 0, solver.getAbsoluteAccuracy());91		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 7));92		result = solver.solve(f, 0.3, 0.7);93		junit.framework.Assert.assertEquals(result, 0.5, solver.getAbsoluteAccuracy());94		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 8));95		result = solver.solve(f, 0.2, 0.6);96		junit.framework.Assert.assertEquals(result, 0.5, solver.getAbsoluteAccuracy());97		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 7));98		result = solver.solve(f, 0.05, 0.95);99		junit.framework.Assert.assertEquals(result, 0.5, solver.getAbsoluteAccuracy());100		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 9));101		result = solver.solve(f, 0.85, 1.25);102		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());103		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 11));104		result = solver.solve(f, 0.8, 1.2);105		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());106		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 9));107		result = solver.solve(f, 0.85, 1.75);108		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());109		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 15));110		result = solver.solve(f, 0.55, 1.45);111		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());112		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 8));113		result = solver.solve(f, 0.85, 5);114		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());115		junit.framework.Assert.assertTrue(((solver.getIterationCount()) <= 15));116		result = org.apache.commons.math.analysis.solvers.UnivariateRealSolverUtils.solve(f, -0.2, 0.2);117		junit.framework.Assert.assertEquals(result, 0, solver.getAbsoluteAccuracy());118		result = org.apache.commons.math.analysis.solvers.UnivariateRealSolverUtils.solve(f, -0.1, 0.3);119		junit.framework.Assert.assertEquals(result, 0, 1.0E-8);120		result = org.apache.commons.math.analysis.solvers.UnivariateRealSolverUtils.solve(f, -0.3, 0.45);121		junit.framework.Assert.assertEquals(result, 0, 1.0E-6);122		result = org.apache.commons.math.analysis.solvers.UnivariateRealSolverUtils.solve(f, 0.3, 0.7);123		junit.framework.Assert.assertEquals(result, 0.5, 1.0E-6);124		result = org.apache.commons.math.analysis.solvers.UnivariateRealSolverUtils.solve(f, 0.2, 0.6);125		junit.framework.Assert.assertEquals(result, 0.5, 1.0E-6);126		result = org.apache.commons.math.analysis.solvers.UnivariateRealSolverUtils.solve(f, 0.05, 0.95);127		junit.framework.Assert.assertEquals(result, 0.5, 1.0E-6);128		result = org.apache.commons.math.analysis.solvers.UnivariateRealSolverUtils.solve(f, 0.85, 1.25);129		junit.framework.Assert.assertEquals(result, 1.0, 1.0E-6);130		result = org.apache.commons.math.analysis.solvers.UnivariateRealSolverUtils.solve(f, 0.8, 1.2);131		junit.framework.Assert.assertEquals(result, 1.0, 1.0E-6);132		result = org.apache.commons.math.analysis.solvers.UnivariateRealSolverUtils.solve(f, 0.85, 1.75);133		junit.framework.Assert.assertEquals(result, 1.0, 1.0E-6);134		result = org.apache.commons.math.analysis.solvers.UnivariateRealSolverUtils.solve(f, 0.55, 1.45);135		junit.framework.Assert.assertEquals(result, 1.0, 1.0E-6);136		result = org.apache.commons.math.analysis.solvers.UnivariateRealSolverUtils.solve(f, 0.85, 5);137		junit.framework.Assert.assertEquals(result, 1.0, 1.0E-6);138	}139	public void testRootEndpoints() throws java.lang.Exception {140		org.apache.commons.math.analysis.UnivariateRealFunction f = new org.apache.commons.math.analysis.SinFunction();141		org.apache.commons.math.analysis.solvers.UnivariateRealSolver solver = new org.apache.commons.math.analysis.solvers.BrentSolver();142		double result = solver.solve(f, java.lang.Math.PI, 4);143		junit.framework.Assert.assertEquals(java.lang.Math.PI, result, solver.getAbsoluteAccuracy());144		result = solver.solve(f, 3, java.lang.Math.PI);145		junit.framework.Assert.assertEquals(java.lang.Math.PI, result, solver.getAbsoluteAccuracy());146		result = solver.solve(f, java.lang.Math.PI, 4, 3.5);147		junit.framework.Assert.assertEquals(java.lang.Math.PI, result, solver.getAbsoluteAccuracy());148		result = solver.solve(f, 3, java.lang.Math.PI, 3.07);149		junit.framework.Assert.assertEquals(java.lang.Math.PI, result, solver.getAbsoluteAccuracy());150	}151	public void testBadEndpoints() throws java.lang.Exception {152		org.apache.commons.math.analysis.UnivariateRealFunction f = new org.apache.commons.math.analysis.SinFunction();153		org.apache.commons.math.analysis.solvers.UnivariateRealSolver solver = new org.apache.commons.math.analysis.solvers.BrentSolver();154		try {155			solver.solve(f, 1, -1);156			junit.framework.Assert.fail("Expecting IllegalArgumentException - bad interval");157		} catch (java.lang.IllegalArgumentException ex) {158		}159		try {160			solver.solve(f, 1, 1.5);161			junit.framework.Assert.fail("Expecting IllegalArgumentException - non-bracketing");162		} catch (java.lang.IllegalArgumentException ex) {163		}164		try {165			solver.solve(f, 1, 1.5, 1.2);166			junit.framework.Assert.fail("Expecting IllegalArgumentException - non-bracketing");167		} catch (java.lang.IllegalArgumentException ex) {168		}169	}170	public void testInitialGuess() throws org.apache.commons.math.MathException {171		org.apache.commons.math.analysis.MonitoredFunction f = new org.apache.commons.math.analysis.MonitoredFunction(new org.apache.commons.math.analysis.QuinticFunction());172		org.apache.commons.math.analysis.solvers.UnivariateRealSolver solver = new org.apache.commons.math.analysis.solvers.BrentSolver();173		double result;174		result = solver.solve(f, 0.6, 7.0);175		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());176		int referenceCallsCount = f.getCallsCount();177		junit.framework.Assert.assertTrue((referenceCallsCount >= 13));178		try {179			result = solver.solve(f, 0.6, 7.0, 0.0);180			junit.framework.Assert.fail("an IllegalArgumentException was expected");181		} catch (java.lang.IllegalArgumentException iae) {182		} catch (java.lang.Exception e) {183			junit.framework.Assert.fail(("wrong exception caught: " + (e.getMessage())));184		}185		f.setCallsCount(0);186		result = solver.solve(f, 0.6, 7.0, 0.61);187		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());188		junit.framework.Assert.assertTrue(((f.getCallsCount()) > referenceCallsCount));189		f.setCallsCount(0);190		result = solver.solve(f, 0.6, 7.0, 0.999999);191		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());192		junit.framework.Assert.assertTrue(((f.getCallsCount()) < referenceCallsCount));193		f.setCallsCount(0);194		result = solver.solve(f, 0.6, 7.0, 1.0);195		junit.framework.Assert.assertEquals(result, 1.0, solver.getAbsoluteAccuracy());196		junit.framework.Assert.assertEquals(0, solver.getIterationCount());197		junit.framework.Assert.assertEquals(1, f.getCallsCount());198	}199}...

...13	public void testFormat() {14		org.apache.commons.math.fraction.BigFraction c = new org.apache.commons.math.fraction.BigFraction(1 , 2);15		java.lang.String expected = "1 / 2";16		java.lang.String actual = properFormat.format(c);17		junit.framework.Assert.assertEquals(expected, actual);18		actual = improperFormat.format(c);19		junit.framework.Assert.assertEquals(expected, actual);20	}21	public void testFormatNegative() {22		org.apache.commons.math.fraction.BigFraction c = new org.apache.commons.math.fraction.BigFraction(-1 , 2);23		java.lang.String expected = "-1 / 2";24		java.lang.String actual = properFormat.format(c);25		junit.framework.Assert.assertEquals(expected, actual);26		actual = improperFormat.format(c);27		junit.framework.Assert.assertEquals(expected, actual);28	}29	public void testFormatZero() {30		org.apache.commons.math.fraction.BigFraction c = new org.apache.commons.math.fraction.BigFraction(0 , 1);31		java.lang.String expected = "0 / 1";32		java.lang.String actual = properFormat.format(c);33		junit.framework.Assert.assertEquals(expected, actual);34		actual = improperFormat.format(c);35		junit.framework.Assert.assertEquals(expected, actual);36	}37	public void testFormatImproper() {38		org.apache.commons.math.fraction.BigFraction c = new org.apache.commons.math.fraction.BigFraction(5 , 3);39		java.lang.String actual = properFormat.format(c);40		junit.framework.Assert.assertEquals("1 2 / 3", actual);41		actual = improperFormat.format(c);42		junit.framework.Assert.assertEquals("5 / 3", actual);43	}44	public void testFormatImproperNegative() {45		org.apache.commons.math.fraction.BigFraction c = new org.apache.commons.math.fraction.BigFraction(-5 , 3);46		java.lang.String actual = properFormat.format(c);47		junit.framework.Assert.assertEquals("-1 2 / 3", actual);48		actual = improperFormat.format(c);49		junit.framework.Assert.assertEquals("-5 / 3", actual);50	}51	public void testParse() {52		java.lang.String source = "1 / 2";53		try {54			org.apache.commons.math.fraction.BigFraction c = properFormat.parse(source);55			junit.framework.Assert.assertNotNull(c);56			junit.framework.Assert.assertEquals(java.math.BigInteger.ONE, c.getNumerator());57			junit.framework.Assert.assertEquals(java.math.BigInteger.valueOf(2L), c.getDenominator());58			c = improperFormat.parse(source);59			junit.framework.Assert.assertNotNull(c);60			junit.framework.Assert.assertEquals(java.math.BigInteger.ONE, c.getNumerator());61			junit.framework.Assert.assertEquals(java.math.BigInteger.valueOf(2L), c.getDenominator());62		} catch (java.text.ParseException ex) {63			junit.framework.Assert.fail(ex.getMessage());64		}65	}66	public void testParseInteger() {67		java.lang.String source = "10";68		try {69			org.apache.commons.math.fraction.BigFraction c = properFormat.parse(source);70			junit.framework.Assert.assertNotNull(c);71			junit.framework.Assert.assertEquals(java.math.BigInteger.TEN, c.getNumerator());72			junit.framework.Assert.assertEquals(java.math.BigInteger.ONE, c.getDenominator());73		} catch (java.text.ParseException ex) {74			junit.framework.Assert.fail(ex.getMessage());75		}76		try {77			org.apache.commons.math.fraction.BigFraction c = improperFormat.parse(source);78			junit.framework.Assert.assertNotNull(c);79			junit.framework.Assert.assertEquals(java.math.BigInteger.TEN, c.getNumerator());80			junit.framework.Assert.assertEquals(java.math.BigInteger.ONE, c.getDenominator());81		} catch (java.text.ParseException ex) {82			junit.framework.Assert.fail(ex.getMessage());83		}84	}85	public void testParseInvalid() {86		java.lang.String source = "a";87		java.lang.String msg = "should not be able to parse '10 / a'.";88		try {89			properFormat.parse(source);90			junit.framework.Assert.fail(msg);91		} catch (java.text.ParseException ex) {92		}93		try {94			improperFormat.parse(source);95			junit.framework.Assert.fail(msg);96		} catch (java.text.ParseException ex) {97		}98	}99	public void testParseInvalidDenominator() {100		java.lang.String source = "10 / a";101		java.lang.String msg = "should not be able to parse '10 / a'.";102		try {103			properFormat.parse(source);104			junit.framework.Assert.fail(msg);105		} catch (java.text.ParseException ex) {106		}107		try {108			improperFormat.parse(source);109			junit.framework.Assert.fail(msg);110		} catch (java.text.ParseException ex) {111		}112	}113	public void testParseNegative() {114		try {115			java.lang.String source = "-1 / 2";116			org.apache.commons.math.fraction.BigFraction c = properFormat.parse(source);117			junit.framework.Assert.assertNotNull(c);118			junit.framework.Assert.assertEquals(-1, c.getNumeratorAsInt());119			junit.framework.Assert.assertEquals(2, c.getDenominatorAsInt());120			c = improperFormat.parse(source);121			junit.framework.Assert.assertNotNull(c);122			junit.framework.Assert.assertEquals(-1, c.getNumeratorAsInt());123			junit.framework.Assert.assertEquals(2, c.getDenominatorAsInt());124			source = "1 / -2";125			c = properFormat.parse(source);126			junit.framework.Assert.assertNotNull(c);127			junit.framework.Assert.assertEquals(-1, c.getNumeratorAsInt());128			junit.framework.Assert.assertEquals(2, c.getDenominatorAsInt());129			c = improperFormat.parse(source);130			junit.framework.Assert.assertNotNull(c);131			junit.framework.Assert.assertEquals(-1, c.getNumeratorAsInt());132			junit.framework.Assert.assertEquals(2, c.getDenominatorAsInt());133		} catch (java.text.ParseException ex) {134			junit.framework.Assert.fail(ex.getMessage());135		}136	}137	public void testParseProper() {138		java.lang.String source = "1 2 / 3";139		try {140			org.apache.commons.math.fraction.BigFraction c = properFormat.parse(source);141			junit.framework.Assert.assertNotNull(c);142			junit.framework.Assert.assertEquals(5, c.getNumeratorAsInt());143			junit.framework.Assert.assertEquals(3, c.getDenominatorAsInt());144		} catch (java.text.ParseException ex) {145			junit.framework.Assert.fail(ex.getMessage());146		}147		try {148			improperFormat.parse(source);149			junit.framework.Assert.fail("invalid improper fraction.");150		} catch (java.text.ParseException ex) {151		}152	}153	public void testParseProperNegative() {154		java.lang.String source = "-1 2 / 3";155		try {156			org.apache.commons.math.fraction.BigFraction c = properFormat.parse(source);157			junit.framework.Assert.assertNotNull(c);158			junit.framework.Assert.assertEquals(-5, c.getNumeratorAsInt());159			junit.framework.Assert.assertEquals(3, c.getDenominatorAsInt());160		} catch (java.text.ParseException ex) {161			junit.framework.Assert.fail(ex.getMessage());162		}163		try {164			improperFormat.parse(source);165			junit.framework.Assert.fail("invalid improper fraction.");166		} catch (java.text.ParseException ex) {167		}168	}169	public void testParseProperInvalidMinus() {170		java.lang.String source = "2 -2 / 3";171		try {172			properFormat.parse(source);173			junit.framework.Assert.fail("invalid minus in improper fraction.");174		} catch (java.text.ParseException ex) {175		}176		source = "2 2 / -3";177		try {178			properFormat.parse(source);179			junit.framework.Assert.fail("invalid minus in improper fraction.");180		} catch (java.text.ParseException ex) {181		}182	}183	public void testParseBig() throws java.text.ParseException {184		org.apache.commons.math.fraction.BigFraction f1 = improperFormat.parse(("167213075789791382630275400487886041651764456874403" + (" / " + "53225575123090058458126718248444563466137046489291")));185		junit.framework.Assert.assertEquals(java.lang.Math.PI, f1.doubleValue(), 0.0);186		org.apache.commons.math.fraction.BigFraction f2 = properFormat.parse(("3 " + ("7536350420521207255895245742552351253353317406530" + (" / " + "53225575123090058458126718248444563466137046489291"))));187		junit.framework.Assert.assertEquals(java.lang.Math.PI, f2.doubleValue(), 0.0);188		junit.framework.Assert.assertEquals(f1, f2);189		java.math.BigDecimal pi = new java.math.BigDecimal("3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117068");190		junit.framework.Assert.assertEquals(pi, f1.bigDecimalValue(99, java.math.BigDecimal.ROUND_HALF_EVEN));191	}192	public void testNumeratorFormat() {193		java.text.NumberFormat old = properFormat.getNumeratorFormat();194		java.text.NumberFormat nf = java.text.NumberFormat.getInstance();195		nf.setParseIntegerOnly(true);196		properFormat.setNumeratorFormat(nf);197		junit.framework.Assert.assertEquals(nf, properFormat.getNumeratorFormat());198		properFormat.setNumeratorFormat(old);199		old = improperFormat.getNumeratorFormat();200		nf = java.text.NumberFormat.getInstance();201		nf.setParseIntegerOnly(true);202		improperFormat.setNumeratorFormat(nf);203		junit.framework.Assert.assertEquals(nf, improperFormat.getNumeratorFormat());204		improperFormat.setNumeratorFormat(old);205	}206	public void testDenominatorFormat() {207		java.text.NumberFormat old = properFormat.getDenominatorFormat();208		java.text.NumberFormat nf = java.text.NumberFormat.getInstance();209		nf.setParseIntegerOnly(true);210		properFormat.setDenominatorFormat(nf);211		junit.framework.Assert.assertEquals(nf, properFormat.getDenominatorFormat());212		properFormat.setDenominatorFormat(old);213		old = improperFormat.getDenominatorFormat();214		nf = java.text.NumberFormat.getInstance();215		nf.setParseIntegerOnly(true);216		improperFormat.setDenominatorFormat(nf);217		junit.framework.Assert.assertEquals(nf, improperFormat.getDenominatorFormat());218		improperFormat.setDenominatorFormat(old);219	}220	public void testWholeFormat() {221		org.apache.commons.math.fraction.ProperBigFractionFormat format = ((org.apache.commons.math.fraction.ProperBigFractionFormat)(properFormat));222		java.text.NumberFormat old = format.getWholeFormat();223		java.text.NumberFormat nf = java.text.NumberFormat.getInstance();224		nf.setParseIntegerOnly(true);225		format.setWholeFormat(nf);226		junit.framework.Assert.assertEquals(nf, format.getWholeFormat());227		format.setWholeFormat(old);228	}229	public void testLongFormat() {230		junit.framework.Assert.assertEquals("10 / 1", improperFormat.format(10L));231	}232	public void testDoubleFormat() {233		junit.framework.Assert.assertEquals("1 / 16", improperFormat.format(0.0625));234	}235}...