# How to use bigIntN method in fast-check-monorepo

Best JavaScript code snippet using fast-check-monorepo

reverse_binary.js

Source:reverse_binary.js

`1"use strict";2// Maximum number of bits to safetly represent numbers in JS:3// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER4const MAX_SAFE_INTEGER_NUM_BITS = 53;5const MAX_SAFE_INTEGER_NUM_BITS_BIGINT = 53n;6/**7 * Reverse bits for a given number.8 * 9 * It reverses number's "significant" bits.10 * "Significant" bits start with the first bit that has a value of 1.11 * 12 * 13 * Eg. in 64 but representation of 13:14 * 15 * 00000 ....... 00110116 * 17 * The "significant" bits are the last 4:18 * 19 * 110120 * 21 * 22 * Eg:23 * 24 * Given a number on 64 bit: 25 * 000000 ....... 00001101 (64 bit for "13")26 * 27 * - reverse "significant" bits:28 * 000000 ....... 00001011 (64 bit for "11") 29 * 30 * - reverse all bits (not implemented):31 * 110100 ....... 0000000032 * 33 * Number of bits of a number is 64:34 * https://www.w3schools.com/js/js_numbers.asp35 * 36 * @param {number} n - Number to reverse37 * @returns n with "significant" bits reversed38 */39function reverseBinary(n) {40 if ( typeof(n) != "number" ) {41 throw new Error("reverseBinary: given parameter must be a number");42 }43 //@tbd is next validation needed?!44 if ( n < 0) {45 //do not deal with negative numbers (sign bit etc)46 throw new Error("reverseBinary: given parameter must be a positive number");47 }48 49 // convert n to a 64bit unsigned integer50 // if n is not an integer then an excception is thrown51 var bigintN, sbPosition, bigintReversedN;52 53 bigintN = BigInt.asUintN(MAX_SAFE_INTEGER_NUM_BITS, BigInt(n));54 bigintReversedN = BigInt.asUintN(MAX_SAFE_INTEGER_NUM_BITS, BigInt(0));55 sbPosition = getSignificantBitOffset(bigintN);56 var ctrlBitmask = 2n ** sbPosition;57 var pos = 0n;58 //deal with last sbPosition bits in bigintN59 for ( ctrlBitmask = 2n ** sbPosition;60 ctrlBitmask > 0n;61 ctrlBitmask >>= 1n, pos++) {62 63 if ( (ctrlBitmask & bigintN) == 0n ) {64 continue;65 }66 bigintReversedN |= ( 1n << pos );67 }68 return Number(bigintReversedN);69}70/**71 * Given a 64bit bigint number, returns the offset 72 * of the number's first bit set to 1.73 * 74 * Eg:75 * 76 * 0000 ...... 0000110177 * 78 * returns:79 * 80 * 3 81 * ( bitmask: 0000 .......00001000)82 * 83 * @param {*} n 84 * @returns number of "significant" bits minus one (the offset of the first "significant" bit)85 */86function getSignificantBitOffset(n) {87 var ctrBitMask;88 var bitPosition;89 bitPosition = (MAX_SAFE_INTEGER_NUM_BITS_BIGINT - 1n);90 for ( ctrBitMask = BigInt.asUintN(MAX_SAFE_INTEGER_NUM_BITS, 2n ** (MAX_SAFE_INTEGER_NUM_BITS_BIGINT - 1n)); 91 ctrBitMask >= 0; 92 ctrBitMask >>= 1n, bitPosition-- ) {93 if ( ( n & ctrBitMask ) == ctrBitMask ) {94 break;95 }96 }97 return bitPosition;98}99/* module exports --------------------------------------------------------------*/100exports.MAX_SAFE_INTEGER_NUM_BITS = MAX_SAFE_INTEGER_NUM_BITS; 101exports.reverseBinary = reverseBinary;...`

solution_c.js

Source:solution_c.js

`1// Problem 1 C2// Task: Provide 3 unique implementations of the following function.3// Input: `n` - any integer from `0` to `Number.MAX_SAFE_INTEGER`.4// Output: `return` - summation to `n`, i.e. sum_to_n(5) === 1 + 2 + 3 + 4 + 5 === 15.5const bigIntZero = BigInt(0);6const bigIntOne = BigInt(1);7const decorate = (fn) => (...args) => {8 let result = fn.apply(null, args);9 while (typeof result === 'function') {10 result = result();11 }12 return result;13};14const recursiveSum = (n, sum = BigInt(0)) => {15 const bigIntN = BigInt(n);16 return bigIntN === bigIntZero ? sum : () => recursiveSum(bigIntN - bigIntOne, sum + bigIntN);17};18const sum_to_n = function(n) {19 return decorate(recursiveSum)(n);20};...`

solution_a.js

Source:solution_a.js

`1// Problem 1 A2// Task: Provide 3 unique implementations of the following function.3// Input: `n` - any integer from `0` to `Number.MAX_SAFE_INTEGER`.4// Output: `return` - summation to `n`, i.e. sum_to_n(5) === 1 + 2 + 3 + 4 + 5 === 15.5const sum_to_n = function(n) {6 const bigIntN = BigInt(n);7 return (bigIntN + BigInt(1)) * bigIntN / BigInt(2);8};...`

Using AI Code Generation

`1const { bigIntN } = require('fast-check');2const { bigIntN } = require('fast-check');3const fc = require('fast-check');4const { bigIntN } = fc;5const { bigIntN } = require('fast-check-monorepo');6const { bigIntN } = require('fast-check-monorepo');7const fc = require('fast-check-monorepo');8const { bigIntN } = fc;9const { bigIntN } = require('fast-check-monorepo');10const { bigIntN } = require('fast-check-monorepo');11const fc = require('fast-check-monorepo');12const { bigIntN } = fc;13const { bigIntN } = require('fast-check-monorepo');14const { bigIntN } = require('fast-check-monorepo');15const fc = require('fast-check-monorepo');16const { bigIntN } = fc;17const { bigIntN } = require('fast-check-monorepo');18const { bigIntN } = require('fast-check-monorepo');19const fc = require('fast-check-monorepo');20const { bigIntN } = fc;21const { bigIntN } = require('fast-check-monorepo');22const { bigIntN } = require('fast-check-monorepo');23const fc = require('fast-check-monorepo');24const { bigIntN } = fc;25const { bigIntN } = require('fast-check-monorepo');26const { bigIntN } = require('fast-check-monorepo');`

Using AI Code Generation

`1const fc = require('fast-check')2const bigIntN = require('fast-check-monorepo').bigIntN3const bigInt = require('big-integer')4const bigIntArb = bigIntN(100)5const bigIntArb2 = bigIntN(100)6fc.assert(fc.property(bigIntArb, bigIntArb2, (a, b) => {7 return bigInt(a).add(b).compare(0) >= 08}))9const fc = require('fast-check')10const bigIntN = require('fast-check-monorepo').bigIntN11const bigInt = require('big-integer')12const bigIntArb = bigIntN(100)13const bigIntArb2 = bigIntN(100)14fc.assert(fc.property(bigIntArb, bigIntArb2, (a, b) => {15 return bigInt(a).add(b).compare(0) >= 016}))17const fc = require('fast-check')18const bigIntN = require('fast-check-monorepo').bigIntN19const bigInt = require('big-integer')20const bigIntArb = bigIntN(100)21const bigIntArb2 = bigIntN(100)22fc.assert(fc.property(bigIntArb, bigIntArb2, (a, b) => {23 return bigInt(a).add(b).compare(0) >= 024}))25const fc = require('fast-check')26const bigIntN = require('fast-check-monorepo').bigIntN27const bigInt = require('big-integer')28const bigIntArb = bigIntN(100)29const bigIntArb2 = bigIntN(100)30fc.assert(fc.property(bigIntArb, bigIntArb2, (a, b) => {31 return bigInt(a).add(b).compare(0) >= 032}))33const fc = require('fast-check')`

Using AI Code Generation

`1const fc = require("fast-check");2const bigIntN = fc.bigIntN;3const bigInt = fc.bigInt;4const arb = bigIntN(10);5const arb2 = bigIntN(10);6const arb3 = bigIntN(10);7const arb4 = bigIntN(10);8const arb5 = bigIntN(10);9const arb6 = bigIntN(10);10const arb7 = bigIntN(10);11const arb8 = bigIntN(10);12const arb9 = bigIntN(10);13const arb10 = bigIntN(10);14const arb11 = bigIntN(10);15const arb12 = bigIntN(10);16const arb13 = bigIntN(10);17const arb14 = bigIntN(10);18const arb15 = bigIntN(10);19const arb16 = bigIntN(10);20const arb17 = bigIntN(10);21const arb18 = bigIntN(10);22const arb19 = bigIntN(10);23const arb20 = bigIntN(10);24const arb21 = bigIntN(10);25const arb22 = bigIntN(10);26const arb23 = bigIntN(10);27const arb24 = bigIntN(10);28const arb25 = bigIntN(10);29const arb26 = bigIntN(10);30const arb27 = bigIntN(10);31const arb28 = bigIntN(10);32const arb29 = bigIntN(10);33const arb30 = bigIntN(10);34const arb31 = bigIntN(10);35const arb32 = bigIntN(10);36const arb33 = bigIntN(10);37const arb34 = bigIntN(10);38const arb35 = bigIntN(10);39const arb36 = bigIntN(10);40const arb37 = bigIntN(10);41const arb38 = bigIntN(10);42const arb39 = bigIntN(10);43const arb40 = bigIntN(10);44const arb41 = bigIntN(10);45const arb42 = bigIntN(10);46const arb43 = bigIntN(10);47const arb44 = bigIntN(10);48const arb45 = bigIntN(10);49const arb46 = bigIntN(10);50const arb47 = bigIntN(10);`

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