How to use bigIntIndexCurrent method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

DoubleHelpers.spec.ts

Source:DoubleHelpers.spec.ts

1import * as fc from 'fast-check';2import { float64raw, isStrictlySmaller } from '../../__test-helpers__/FloatingPointHelpers';3import {4  decomposeDouble,5  doubleToIndex,6  indexToDouble,7} from '../../../../../src/arbitrary/_internals/helpers/DoubleHelpers';8type Index = ReturnType<typeof doubleToIndex>;9const toIndex = (raw: bigint | string): Index => {10  const b = typeof raw === 'string' ? BigInt(raw) : raw;11  const pb = b < BigInt(0) ? -b : b;12  return { sign: b < BigInt(0) ? -1 : 1, data: [Number(pb >> BigInt(32)), Number(pb & BigInt(0xffffffff))] };13};14const toBigInt = (index: Index): bigint => {15  return BigInt(index.sign) * ((BigInt(index.data[0]) << BigInt(32)) + BigInt(index.data[1]));16};17describe('decomposeDouble', () => {18  it('should properly decompose basic values', () => {19    expect(decomposeDouble(0)).toEqual({ exponent: -1022, significand: 0 });20    expect(decomposeDouble(1)).toEqual({ exponent: 0, significand: 1 });21    expect(decomposeDouble(128)).toEqual({ exponent: 7, significand: 1 });22    expect(decomposeDouble(201)).toEqual({ exponent: 7, significand: 1.5703125 });23  });24  it('should properly decompose negative values', () => {25    expect(decomposeDouble(-0)).toEqual({ exponent: -1022, significand: -0 });26    expect(decomposeDouble(-1)).toEqual({ exponent: 0, significand: -1 });27  });28  it('should properly decompose extreme values', () => {29    expect(decomposeDouble(Number.MAX_VALUE)).toEqual({ exponent: 1023, significand: 2 - Number.EPSILON });30    expect(decomposeDouble(Number.MIN_VALUE)).toEqual({ exponent: -1022, significand: Number.EPSILON });31    expect(decomposeDouble(Number.EPSILON)).toEqual({ exponent: -52, significand: 1 });32    expect(decomposeDouble(1 + Number.EPSILON)).toEqual({ exponent: 0, significand: 1 + Number.EPSILON });33  });34  it('should decompose a 64-bit float into its equivalent (significand, exponent)', () => {35    fc.assert(36      fc.property(float64raw(), (f64) => {37        // Arrange38        fc.pre(!Number.isNaN(f64));39        // Act40        const { exponent, significand } = decomposeDouble(f64);41        // Assert42        expect(significand * 2 ** exponent).toBe(f64);43      })44    );45  });46});47describe('doubleToIndex', () => {48  it('should always produce well-formed indexes', () => {49    fc.assert(50      fc.property(float64raw(), (d) => {51        // Arrange52        fc.pre(!Number.isNaN(d));53        // Act54        const index = doubleToIndex(d);55        // Assert56        expect(index.data[0]).toBeGreaterThanOrEqual(0);57        expect(index.data[0]).toBeLessThanOrEqual(0xffffffff);58        expect(Number.isInteger(index.data[0])).toBe(true);59        expect(index.data[1]).toBeGreaterThanOrEqual(0);60        expect(index.data[1]).toBeLessThanOrEqual(0xffffffff);61        expect(Number.isInteger(index.data[1])).toBe(true);62      })63    );64  });65  if (typeof BigInt === 'undefined') {66    it('no test', () => {67      expect(true).toBe(true);68    });69    return;70  } // Following tests require BigInt to be launched71  it('should properly compute indexes', () => {72    expect(doubleToIndex(0)).toEqual(toIndex('0'));73    expect(doubleToIndex(Number.MIN_VALUE)).toEqual(toIndex('1'));74    expect(doubleToIndex(2 * Number.MIN_VALUE)).toEqual(toIndex('2'));75    expect(doubleToIndex(3 * Number.MIN_VALUE)).toEqual(toIndex('3'));76    // Last double with minimal exponent, ie -102277    // index(last with min exponent) = 2**53 - 178    expect(doubleToIndex(2 ** -1022 * (2 - Number.EPSILON))).toEqual(toIndex('9007199254740991'));79    // First double without minimal exponent, ie -102280    // index(first without min exponent) = index(last with min exponent) + 181    expect(doubleToIndex(2 ** -1021)).toEqual(toIndex('9007199254740992'));82    // Number.EPSILON === 1. * 2**-52 --> m = 1, e = -5283    // index(Number.EPSILON) = 2**53 + (-52 - (-1022) -1) * 2**5284    expect(doubleToIndex(Number.EPSILON)).toEqual(toIndex('4372995238176751616'));85    // index(1 - Number.EPSILON / 2) = index(1) - 186    expect(doubleToIndex(1 - Number.EPSILON / 2)).toEqual(toIndex('4607182418800017407'));87    // 1 === 1. * 2**0 --> m = 1, e = 088    // index(1) = 2**53 + (0 - (-1022) -1) * 2**5289    expect(doubleToIndex(1)).toEqual(toIndex('4607182418800017408'));90    // index(1 + Number.EPSILON) = index(1) + 191    expect(doubleToIndex(1 + Number.EPSILON)).toEqual(toIndex('4607182418800017409'));92    // index(2 - Number.EPSILON) = index(2) - 1 = index(1 + (2 ** 52 - 1) * Number.EPSILON)93    expect(doubleToIndex(2 - Number.EPSILON)).toEqual(toIndex('4611686018427387903'));94    // 1 === 1. * 2**1 --> m = 1, e = 195    // index(2) = index(1) + 2**5296    expect(doubleToIndex(2)).toEqual(toIndex('4611686018427387904'));97    // Number.MAX_VALUE === (1 + (2**52-1)/2**52) * 2**1023 --> m = 1 + (2**52-1)/2**52, e = 102398    // index(Number.MAX_VALUE) = index(next(Number.MAX_VALUE)) -1 = 2**53 + (1024 - (-1022) -1) * 2**52 -199    expect(doubleToIndex(Number.MAX_VALUE)).toEqual(toIndex('9218868437227405311'));100  });101  it('should properly compute negative indexes', () => {102    expect(doubleToIndex(-0)).toEqual(toIndex('-1'));103    expect(doubleToIndex(-Number.MIN_VALUE)).toEqual(toIndex('-2'));104    expect(doubleToIndex(-Number.MAX_VALUE)).toEqual(toIndex('-9218868437227405312'));105  });106  it('should properly compute indexes for infinity', () => {107    expect(doubleToIndex(Number.NEGATIVE_INFINITY)).toEqual(108      toIndex(toBigInt(doubleToIndex(-Number.MAX_VALUE)) - BigInt(1))109    );110    expect(doubleToIndex(Number.POSITIVE_INFINITY)).toEqual(111      toIndex(toBigInt(doubleToIndex(Number.MAX_VALUE)) + BigInt(1))112    );113  });114  it('should be able to infer index for negative double from the positive one', () => {115    fc.assert(116      fc.property(float64raw(), (d) => {117        // Arrange118        fc.pre(!Number.isNaN(d));119        const posD = d > 0 || 1 / d > 0 ? d : -d;120        // Act121        const bigIntIndexPos = toBigInt(doubleToIndex(posD));122        const bigIntIndexNeg = toBigInt(doubleToIndex(-posD));123        // Assert124        expect(bigIntIndexNeg).toEqual(-bigIntIndexPos - BigInt(1));125      })126    );127  });128  it('should return index +1 for the successor of a given double', () => {129    fc.assert(130      fc.property(131        fc.integer({ min: -1022, max: +1023 }),132        fc.integer({ min: 0, max: 2 ** 53 - 1 }),133        (exponent, rescaledSignificand) => {134          // Arrange135          fc.pre(exponent === -1022 || rescaledSignificand >= 2 ** 52); // valid136          fc.pre(exponent !== 1023 || rescaledSignificand !== 2 ** 53 - 1); // not max137          const current = rescaledSignificand * Number.EPSILON * 2 ** exponent;138          const next = (rescaledSignificand + 1) * Number.EPSILON * 2 ** exponent;139          // Act140          const bigIntIndexCurrent = toBigInt(doubleToIndex(current));141          const bigIntIndexNext = toBigInt(doubleToIndex(next));142          // Assert143          expect(bigIntIndexNext).toEqual(bigIntIndexCurrent + BigInt(1));144        }145      )146    );147  });148  it('should preserve ordering between two doubles', () => {149    fc.assert(150      fc.property(float64raw(), float64raw(), (fa64, fb64) => {151        // Arrange152        fc.pre(!Number.isNaN(fa64) && !Number.isNaN(fb64));153        // Act / Assert154        if (isStrictlySmaller(fa64, fb64)) {155          expect(toBigInt(doubleToIndex(fa64))).toBeLessThan(toBigInt(doubleToIndex(fb64)));156        } else {157          expect(toBigInt(doubleToIndex(fa64))).toBeGreaterThanOrEqual(toBigInt(doubleToIndex(fb64)));158        }159      })160    );161  });162});163describe('indexToDouble', () => {164  it('Should reverse doubleToIndex', () =>165    fc.assert(166      fc.property(float64raw(), (f64) => {167        fc.pre(!Number.isNaN(f64));168        expect(indexToDouble(doubleToIndex(f64))).toBe(f64);169      })170    ));171  if (typeof BigInt === 'undefined') {172    it('no test', () => {173      expect(true).toBe(true);174    });175    return;176  } // Following tests require BigInt to be launched177  it('should properly find doubles corresponding to well-known values', () => {178    expect(indexToDouble(toIndex('-9218868437227405313'))).toBe(Number.NEGATIVE_INFINITY);179    expect(indexToDouble(toIndex('-9218868437227405312'))).toBe(-Number.MAX_VALUE);180    expect(indexToDouble(toIndex('-1'))).toBe(-0);181    expect(indexToDouble(toIndex('0'))).toBe(0);182    expect(indexToDouble(toIndex('4372995238176751616'))).toBe(Number.EPSILON);183    expect(indexToDouble(toIndex('9218868437227405311'))).toBe(Number.MAX_VALUE);184    expect(indexToDouble(toIndex('9218868437227405312'))).toBe(Number.POSITIVE_INFINITY);185  });186  it('should be reversed by doubleToIndex', () => {187    fc.assert(188      fc.property(189        fc.bigInt({ min: BigInt('-9218868437227405313'), max: BigInt('9218868437227405312') }),190        (bigIntIndex) => {191          // The test below checks that indexToDouble(doubleToIndex) is identity192          // It does not confirm that doubleToIndex(indexToDouble)) is identity193          // Arrange194          const index = toIndex(bigIntIndex);195          // Act / Assert196          expect(doubleToIndex(indexToDouble(index))).toEqual(index);197        }198      )199    );200  });...

Using AI Code Generation

1const fc = require('fast-check');2const bigIntIndexCurrent = require('fast-check-monorepo').bigIntIndexCurrent;3const bigIntIndex = require('fast-check-monorepo').bigIntIndex;4const bigIntIndexOld = require('fast-check-monorepo').bigIntIndexOld;5fc.assert(6  fc.property(7    fc.bigInt({min: 0n, max: 1000000000000000000000000000n}),8    fc.bigInt({min: 0n, max: 1000000000000000000000000000n}),9    fc.bigInt({min: 0n, max: 1000000000000000000000000000n}),10    (a, b, c) => {11      return bigIntIndexCurrent(a, b, c) === bigIntIndexOld(a, b, c);12    }13);14const fc = require('fast-check');15const bigIntIndexCurrent = require('fast-check-monorepo').bigIntIndexCurrent;16const bigIntIndex = require('fast-check-monorepo').bigIntIndex;17const bigIntIndexOld = require('fast-check-monorepo').bigIntIndexOld;18fc.assert(19  fc.property(20    fc.bigInt({min: 0n, max: 1000000000000000000000000000n}),21    fc.bigInt({min: 0n, max: 1000000000000000000000000000n}),22    fc.bigInt({min: 0n, max: 1000000000000000000000000000n}),23    (a, b, c) => {24      return bigIntIndexCurrent(a, b, c) === bigIntIndexOld(a, b, c);25    }26);27const fc = require('fast-check');28const bigIntIndexCurrent = require('fast-check-monorepo').bigIntIndexCurrent;29const bigIntIndex = require('fast-check-monorepo').bigIntIndex;30const bigIntIndexOld = require('fast-check-monorepo').bigIntIndexOld;31fc.assert(32  fc.property(33    fc.bigInt({min: 0n, max

Using AI Code Generation

1import bigIntIndexCurrent from 'fast-check';2const bigIntIndex = bigIntIndexCurrent.bigIntIndex;3const bigIntIndexCurrent = bigIntIndexCurrent.bigIntIndexCurrent;4const bigIntIndex = require('fast-check').bigIntIndex;5const bigIntIndexCurrent = require('fast-check').bigIntIndexCurrent;6const bigIntIndex = require('fast-check-monorepo').bigIntIndex;7const bigIntIndexCurrent = require('fast-check-monorepo').bigIntIndexCurrent;8const arb = bigIntIndex();9const arbCurrent = bigIntIndexCurrent();10function bigIntIndexCurrent(): Arbitrary<bigint>;11import * as fc from 'fast-check';12fc.assert(13  fc.property(fc.bigIntArray(), fc.bigIntIndexCurrent(), (arr, idx) => {14    return idx >= 0 && idx < BigInt(arr.length);15  })16);17function bigUint(): Arbitrary<bigint>;18import * as fc from 'fast-check';19fc.assert(20  fc.property(fc.bigUint(), (n) => {21    return n >= 0 && n <= Number.MAX_SAFE_INTEGER;22  })23);24function bigUintN(n:

Using AI Code Generation

1const fc = require('fast-check');2const bigIntIndexCurrent = require('fast-check/lib/fast-check-default').bigIntIndexCurrent;3const bigIntIndex = require('fast-check/lib/fast-check-default').bigIntIndex;4const bigIntIndexOld = require('fast-check/lib/fast-check-default').bigIntIndexOld;5const bigIntIndexNew = require('fast-check/lib/fast-check-default').bigIntIndexNew;6const bigIntIndexOld2 = require('fast-check/lib/fast-check-default').bigIntIndexOld2;7const bigIntIndexOld3 = require('fast-check/lib/fast-check-default').bigIntIndexOld3;8const bigIntIndexOld4 = require('fast-check/lib/fast-check-default').bigIntIndexOld4;9const bigIntIndexOld5 = require('fast-check/lib/fast-check-default').bigIntIndexOld5;10const bigIntIndexOld6 = require('fast-check/lib/fast-check-default').bigIntIndexOld6;11const bigIntIndexOld7 = require('fast-check/lib/fast-check-default').bigIntIndexOld7;12const bigIntIndexOld8 = require('fast-check/lib/fast-check-default').bigIntIndexOld8;13const bigIntIndexOld9 = require('fast-check/lib/fast-check-default').bigIntIndexOld9;14const bigIntIndexOld10 = require('fast-check/lib/fast-check-default').bigIntIndexOld10;15const bigIntIndexOld11 = require('fast-check/lib/fast-check-default').bigIntIndexOld11;16const bigIntIndexOld12 = require('fast-check/lib/fast-check-default').bigIntIndexOld12;17const bigIntIndexOld13 = require('fast-check/lib/fast-check-default').bigIntIndexOld13;18const bigIntIndexOld14 = require('fast-check/lib/fast-check-default').bigIntIndexOld14;19const bigIntIndexOld15 = require('fast-check/lib/fast-check-default').bigIntIndexOld15;20const bigIntIndexOld16 = require('fast-check/lib/fast-check-default').bigIntIndexOld16;21const bigIntIndexOld17 = require('fast-check/lib/fast-check-default').bigIntIndexOld17;22const bigIntIndexOld18 = require('fast-check/lib/fast-check-default').bigIntIndexOld18;

Using AI Code Generation

1const {bigIntIndexCurrent} = require('fast-check');2const {bigInt} = require('fast-check');3const {property} = require('jest-fast-check');4property(5  bigIntIndexCurrent(),6  bigInt(),7  (index, value) => {8    expect(index).toBeGreaterThanOrEqual(0);9    expect(value).toBeGreaterThanOrEqual(0);10    expect(index).toBeLessThanOrEqual(value);11  },12).check();

Using AI Code Generation

1const { bigIntIndexCurrent } = require('fast-check');2const index = bigIntIndexCurrent(0n, 100n);3console.log(index);4const { bigIntIndexCurrent } = require('fast-check');5const index = bigIntIndexCurrent(0n, 100n);6console.log(index);

Using AI Code Generation

1const fc = require('fast-check');2const { bigIntIndexCurrent } = require('fast-check/lib/arbitrary/IntegerArbitrary.js');3const { bigIntIndex } = fc.integer();4const { bigInt } = fc;5const { bigIntN } = fc.nat();6const a = bigIntIndexCurrent(bigIntN, bigIntIndex, bigInt);7console.log(a);8console.log(a.generate(0));9const fc = require('fast-check');10const { bigIntIndexCurrent } = require('fast-check/lib/arbitrary/IntegerArbitrary.js');11const { bigIntIndex } = fc.integer();12const { bigInt } = fc;13const { bigIntN } = fc.nat();14const a = bigIntIndexCurrent(bigIntN, bigIntIndex, bigInt);15console.log(a);16console.log(a.generate(0));17const fc = require('fast-check-monorepo');18const { bigIntIndexCurrent } = require('fast-check-monorepo/lib/arbitrary/IntegerArbitrary.js');19const { bigIntIndex } = fc.integer();20const { bigInt } = fc;21const { bigIntN } = fc.nat();22const a = bigIntIndexCurrent(bigIntN, bigIntIndex, bigInt);23console.log(a);24console.log(a.generate(0));25const fc = require('fast-check-monorepo');26const { bigIntIndexCurrent } = require('fast-check-monorepo/lib/arbitrary/IntegerArbitrary.js');27const { bigIntIndex } = fc.integer();28const { bigInt } = fc;29const { bigIntN } = fc.nat();30const a = bigIntIndexCurrent(bigIntN, bigIntIndex, bigInt);31console.log(a);32console.log(a.generate(0));33const fc = require('fast-check-monorepo');34const { bigIntIndexCurrent } = require('fast-check-monorepo/lib/arbitrary/IntegerArbitrary.js');35const { bigIntIndex } = fc.integer();36const { bigInt } = fc;37const { bigIntN } = fc.nat();38const a = bigIntIndexCurrent(bigIntN, bigInt

Using AI Code Generation

1const {bigIntIndexCurrent} = require('fast-check');2const {bigInt} = require('big-integer');3const {integer} = require('fast-check');4const {bigIntIndexCurrent} = require('fast-check');5const {bigInt} = require('big-integer');6const {integer} = require('fast-check');7const {bigIntIndexCurrent} = require('fast-check');8const {bigInt} = require('big-integer');9const {integer} = require('fast-check');10const {bigIntIndexCurrent} = require('fast-check');11const {bigInt} = require('big-integer');12const {integer} = require('fast-check');13const {bigIntIndexCurrent} = require('fast-check');14const {bigInt} = require('big-integer');15const {integer} = require('fast-check');16const {bigIntIndexCurrent} = require('fast-check');17const {bigInt} = require('big-integer');18const {integer} = require('fast-check');19const {bigIntIndexCurrent} = require('fast-check');20const {bigInt} = require('big-integer');21const {integer} = require('fast-check');22const {bigIntIndexCurrent} = require('fast-check');23const {bigInt} = require('big-integer');24const {integer} = require('fast-check');25const {bigIntIndexCurrent} = require('fast-check');26const {bigInt} = require('big-integer');27const {integer} = require('fast-check');28const {bigIntIndexCurrent} = require('fast-check');29const {bigInt} = require('big-integer');30const {integer} = require('fast-check');31const {bigIntIndexCurrent} = require('fast-check');32const {bigInt} = require('big-integer');33const {integer} = require('fast-check');34const {bigIntIndexCurrent} = require('fast-check');35const {bigInt} = require('big-integer');36const {integer} = require('fast-check');37const {bigIntIndexCurrent} = require('fast-check');38const {bigInt} = require('big-integer');39const {integer} = require('fast-check');40const {bigIntIndexCurrent} = require('fast-check');41const {bigInt} = require('big-integer');42const {integer} = require('fast-check');43const {bigIntIndexCurrent} =

Using AI Code Generation

1const bigIntIndexCurrent = require('fast-check').bigIntIndexCurrent;2const bigIntIndex = bigIntIndexCurrent();3const bigIntIndexNext = require('fast-check').bigIntIndexNext;4const bigIntIndex = bigIntIndexNext();5const bigIntIndexPrevious = require('fast-check').bigIntIndexPrevious;6const bigIntIndex = bigIntIndexPrevious();7const bigIntIndexNext = require('fast-check').bigIntIndexNext;8const bigIntIndex = bigIntIndexNext();9const bigIntIndexCurrent = require('fast-check').bigIntIndexCurrent;10const bigIntIndex = bigIntIndexCurrent();11const bigIntIndexPrevious = require('fast-check').bigIntIndexPrevious;12const bigIntIndex = bigIntIndexPrevious();13const bigIntIndexNext = require('fast-check').bigIntIndexNext;14const bigIntIndex = bigIntIndexNext();15const bigIntIndexCurrent = require('fast-check').bigIntIndexCurrent;16const bigIntIndex = bigIntIndexCurrent();17const bigIntIndexNext = require('fast-check').bigIntIndexNext;18const bigIntIndex = bigIntIndexNext();19const bigIntIndexPrevious = require('fast-check').bigIntIndexPrevious;20const bigIntIndex = bigIntIndexPrevious();

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