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How to use bigIntIndexNext 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 bigIntIndexNext = require('fast-check/lib/arbitrary/bigIntIndexNext');2const bigIntIndex = require('fast-check/lib/arbitrary/bigIntIndex');3const bigInt = require('fast-check/lib/arbitrary/bigInt');4const fc = require('fast-check');5const myMethod = (a, b) => {6  return a + b;7};8const myMethod2 = (a, b) => {9  return a - b;10};11const myMethod3 = (a, b) => {12  return a * b;13};14const myMethod4 = (a, b) => {15  return a / b;16};17const myMethod5 = (a, b) => {18  return a ** b;19};20const myMethod6 = (a, b) => {21  return a % b;22};23const myMethod7 = (a, b) => {24  return a << b;25};26const myMethod8 = (a, b) => {27  return a >> b;28};29const myMethod9 = (a, b) => {30  return a >>> b;31};32const myMethod10 = (a, b) => {33  return a & b;34};35const myMethod11 = (a, b) => {36  return a | b;37};38const myMethod12 = (a, b) => {39  return a ^ b;40};41const myMethod13 = (a, b) => {42  return a ** b;43};44const myMethod14 = (a, b) => {45  return a ** b;46};47const myMethod15 = (a, b) => {48  return a ** b;49};50const myMethod16 = (a, b) => {51  return a ** b;52};53const myMethod17 = (a, b) => {54  return a ** b;55};56const myMethod18 = (a, b) => {57  return a ** b;58};59const myMethod19 = (a, b) => {60  return a ** b;61};62const myMethod20 = (a, b) => {63  return a ** b;64};65const myMethod21 = (a, b) => {66  return a ** b;67};

Using AI Code Generation

1const fc = require('fast-check');2const { bigIntIndexNext } = require('fast-check-monorepo');3const { bigIntIndexNext } = require('fast-check-monorepo');4const { bigIntIndexNext } = require('fast-check-monorepo');5const bigIntIndexNext = require('fast-check-monorepo');6const bigIntIndexNext = require('fast-check-monorepo');7const bigIntIndexNext = require('fast-check-monorepo');8const { bigIntIndexNext } = require('fast-check-monorepo');9const { bigIntIndexNext } = require('fast-check-monorepo');10const { bigIntIndexNext } = require('fast-check-monorepo');11const { bigIntIndexNext } = require('fast-check-monorepo');12const { bigIntIndexNext } = require('fast-check-monorepo');13const { bigIntIndexNext } = require('fast-check-monorepo');14const { bigIntIndexNext } = require('fast-check-monorepo');15const { bigIntIndexNext } = require('fast-check-monorepo');16const { bigIntIndexNext } = require('fast-check-monorepo');17const { bigIntIndexNext } = require('fast-check-monorepo');18const { bigIntIndexNext } = require('fast-check-monorepo');19const { bigIntIndexNext } = require('fast-check-monorepo');20const { bigIntIndexNext } = require('fast-check-monorepo');21const { bigIntIndexNext } = require('fast-check-monorepo');22const { bigIntIndexNext } = require('fast-check-monorepo');23const { bigIntIndexNext } = require('fast-check-monorepo');24const { bigIntIndexNext } = require('fast-check-monorepo');25const { bigIntIndexNext } = require('fast-check-monorepo');26const { bigIntIndexNext } = require('fast-check-monorepo');27const { bigIntIndexNext } = require('fast-check-monorepo');28const { bigIntIndexNext } = require('fast-check-monorepo');29const { bigIntIndexNext } = require('fast-check-monorepo');30const { bigIntIndexNext } = require('fast-check-monorepo');31const { bigIntIndexNext } = require('fast-check-monorepo');32const { bigIntIndexNext } = require('fast-check-monorepo');

Using AI Code Generation

1const bigIntIndexNext = require('fast-check-monorepo').bigIntIndexNext;2const index = bigIntIndexNext(0n);3const index2 = bigIntIndexNext(index);4const index3 = bigIntIndexNext(index2);5{6  "scripts": {7  },8  "repository": {

Using AI Code Generation

1var bigIntIndexNext = require('fast-check').bigIntIndexNext;2var bigIntNext = require('fast-check').bigIntNext;3var bigInt = require('fast-check').bigInt;4var bigIntIndex = bigIntNext(0, 1000);5var bigIntIndex2 = bigIntIndexNext(bigIntIndex);6var bigIntIndex3 = bigIntIndexNext(bigIntIndex2);7console.log(bigIntIndex.toString());8console.log(bigIntIndex2.toString());9console.log(bigIntIndex3.toString());

Using AI Code Generation

1const fc = require('fast-check');2const bigIntIndexNext = require('big-integer-index-next');3const test = () => {4  fc.assert(5    fc.property(fc.bigInt(), (n) => {6      const next = bigIntIndexNext(n);7      return next > n;8    })9  );10};11test();12const bigIntIndexNext = require('big-integer-index-next');13const test = () => {14  fc.assert(15    fc.property(fc.bigInt(), (n) => {16      const next = bigIntIndexNext(n);17      return next > n;18    })19  );20};21test();

Using AI Code Generation

1import { bigIntIndexNext } from 'fast-check';2bigIntIndexNext(100n, 200n, 1n);3import { bigIntIndexNext } from 'fast-check';4bigIntIndexNext(100n, 200n, 1n);5import { bigIntIndexNext } from 'fast-check';6bigIntIndexNext(100n, 200n, 1n);7import { bigIntIndexNext } from 'fast-check';8bigIntIndexNext(100n, 200n, 1n);9import { bigIntIndexNext } from 'fast-check';10bigIntIndexNext(100n, 200n, 1n);11import { bigIntIndexNext } from 'fast-check';12bigIntIndexNext(100n, 200n, 1n);13import { bigIntIndexNext } from 'fast-check';14bigIntIndexNext(100n, 200n, 1n);15import { bigIntIndexNext } from 'fast-check';16bigIntIndexNext(100n, 200n, 1n);17import { bigIntIndexNext } from 'fast-check';18bigIntIndexNext(100n, 200n, 1n);

Using AI Code Generation

1import { bigIntIndexNext } from 'fast-check';2const index = bigIntIndexNext(0n);3import { bigIntIndexNext } from 'fast-check';4const index = bigIntIndexNext(0n);5import { bigIntIndexNext } from 'fast-check';6const index = bigIntIndexNext(0n);7import { bigIntIndexNext } from 'fast-check';8const index = bigIntIndexNext(0n);

Using AI Code Generation

1const { bigIntIndexNext, bigIntIndexPrev } = require('fast-check');2const bigInt = 123456789012345678901234567890n;3const bigIntIndex = bigIntIndexNext(bigInt);4const bigIntIndexPrev = bigIntIndexPrev(bigIntIndex);5const bigIntIndexNext = bigIntIndexNext(bigIntIndex);6console.log('bigInt: ', bigInt);7console.log('bigIntIndex: ', bigIntIndex);8console.log('bigIntIndexPrev: ', bigIntIndexPrev);9console.log('bigIntIndexNext: ', bigIntIndexNext);10const { bigIntIndexNext, bigIntIndexPrev } = require

Using AI Code Generation

1const fc = require("fast-check");2const range = { min: 0, max: 100 };3const random = fc.bigIntIndexNext(range);4console.log(random);5const fc = require("fast-check");6const range = { min: 0, max: 100 };7const random = fc.bigIntNext(range);8console.log(random);9const fc = require("fast-check");10const size = 5;11const random = fc.bigUintArray(size);12console.log(random);13const fc = require("fast-check");14const size = 5;15const random = fc.bigUintArray(size);16console.log(random);17const fc = require("fast-check");18const size = 5;19const random = fc.bigUintArray(size);20console.log(random);

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