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How to use bigIntIndexPos 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
1import { bigIntIndexPos } from 'fast-check';2console.log(bigIntIndexPos(1n, 1n));3console.log(bigIntIndexPos(1n, 2n));4console.log(bigIntIndexPos(1n, 3n));5console.log(bigIntIndexPos(1n, 4n));6console.log(bigIntIndexPos(1n, 5n));7console.log(bigIntIndexPos(1n, 6n));8console.log(bigIntIndexPos(1n, 7n));9console.log(bigIntIndexPos(1n, 8n));10console.log(bigIntIndexPos(1n, 9n));11console.log(bigIntIndexPos(1n, 10n));12console.log(bigIntIndexPos(2n, 1n));13console.log(bigIntIndexPos(2n, 2n));14console.log(bigIntIndexPos(2n, 3n));15console.log(bigIntIndexPos(2n, 4n));16console.log(bigIntIndexPos(2n, 5n));17console.log(bigIntIndexPos(2n, 6n));18console.log(bigIntIndexPos(2n, 7n));19console.log(bigIntIndexPos(2n, 8n));20console.log(bigIntIndexPos(2n, 9n));21console.log(bigIntIndexPos(2n, 10n));22console.log(bigIntIndexPos(3n, 1n));23console.log(bigIntIndexPos(3n, 2n));24console.log(bigIntIndexPos(3n, 3n));25console.log(bigIntIndexPos(3n, 4n));26console.log(bigIntIndexPos(3n, 5n));27console.log(bigIntIndexPos(3n, 6n));28console.log(bigIntIndexPos(3n, 7n));29console.log(bigIntIndexPos(3n, 8n));30console.log(bigIntIndexPos(3n, 9n));31console.log(bigIntIndexPos(3n, 10n));32console.log(bigIntIndexPos(4n, 1n));33console.log(bigIntIndexPos(4n, 2n));34console.log(bigIntIndexPos(4n, 3n));35console.log(bigIntIndexPos(4
Using AI Code Generation
1const fc = require('fast-check');2const bigIntIndexPos = require('bigIntIndexPos');3const bigInt = fc.bigInt();4const bigIntIndexPos = bigIntIndexPos(bigInt);5fc.assert(6 fc.property(bigIntIndexPos, (index) => {7 })8const bigIntIndexPos = require('bigIntIndexPos');9bigIntIndexPos(bigInt)10const fc = require('fast-check');11const bigIntIndexPos = require('bigIntIndexPos');12const bigInt = fc.bigInt();13const bigIntIndexPos = bigIntIndexPos(bigInt);14fc.assert(15 fc.property(bigIntIndexPos, (index) => {16 })17const fc = require('fast-check');18const bigIntIndexPos = require('bigIntIndexPos');19const bigInt = fc.bigInt();20const bigIntIndexPos = bigIntIndexPos(bigInt);21fc.assert(22 fc.property(bigIntIndexPos, (index) => {23 expect(index).toBeGreaterThanOrEqual(0n);24 expect(index).toBeLessThanOrEqual(bigInt - 1n);25 })26Copyright (c) 2021, Samir El-Hajjaj
Using AI Code Generation
1const fc = require('fast-check');2const bigIntIndexPos = require('fast-check-monorepo/lib/bigIntIndexPos.js');3const bigIntIndexPosArb = fc.bigIntIndexPos();4const bigIntIndexPosArb2 = fc.bigIntIndexPos({min: -10n, max: 10n});5fc.assert(6 fc.property(bigIntIndexPosArb, (pos) => {7 return pos >= 0n;8 })9);10fc.assert(11 fc.property(bigIntIndexPosArb2, (pos) => {12 return pos >= -10n && pos <= 10n;13 })14);15const bigIntIndexPosArb = fc.bigIntIndexPos();16const bigIntIndexPosArb2 = fc.bigIntIndexPos({min: -10n, max: 10n});17fc.assert(18 fc.property(fc.array(bigIntIndexPosArb), (arr) => {19 return arr.every((pos) => pos >= 0n);20 })21);22fc.assert(23 fc.property(fc.array(bigIntIndexPosArb2), (arr) => {24 return arr.every((pos) => pos >= -10n && pos <= 10n);25 })26);
Using AI Code Generation
1const { bigIntIndexPos } = require('fast-check');2const { bigInt } = require('fast-check');3const { sample } = require('fast-check');4const { integer } = require('fast-check');5const { assert } = require('chai');6const { bigIntN } = require('fast-check');7const { bigIntNIndexPos } = require('fast-check');8const { bigUintN } = require('fast-check');9const { bigUintNIndexPos } = require('fast-check');10const { bigUint } = require('fast-check');11const { bigUintIndexPos } = require('fast-check');12const { bigIntMax } = require('fast-check');13const { bigIntMaxIndexPos } = require('fast-check');14const { bigUintMax } = require('fast-check');15const { bigUintMaxIndexPos } = require('fast-check');16const { bigIntMin } = require('fast-check');17const { bigIntMinIndexPos } = require('fast-check');18const { bigUintMin } = require('fast-check');19const { bigUintMinIndexPos } = require('fast-check');20const { bigInt64 } = require('fast-check');21const { bigInt64IndexPos } = require('fast-check');22const { bigUint64 } = require('fast-check');23const { bigUint64IndexPos } = require('fast-check');24const { bigInt32 } = require('fast-check');25const { bigInt32IndexPos } = require('fast-check');26const { bigUint32 } = require('fast-check');27const { bigUint32IndexPos } = require('fast-check');28const { bigInt16 } = require('fast-check');29const { bigInt16IndexPos } = require('fast-check');30const { bigUint16 } = require('fast-check');31const { bigUint16IndexPos } = require('fast-check');32const { bigInt8 } = require('fast-check');33const { bigInt8IndexPos } = require('fast-check');34const { bigUint8 } = require('fast-check');35const { bigUint8IndexPos } = require('fast-check');36const { bigIntMinN } = require('fast-check');37const { bigIntMinNIndexPos } = require('fast-check');38const { bigUintMinN } = require('fast-check');39const { bigUintMinNIndexPos }
Using AI Code Generation
1const fastCheck = require('fast-check');2const bigIntIndexPos = require('bigIntIndexPos');3bigIntIndexPos(fastCheck);4module.exports = bigIntIndexPos;5const fastCheck = require('fast-check');6const bigIntIndexPos = require('bigIntIndexPos');7bigIntIndexPos(fastCheck);8module.exports = bigIntIndexPos;
Using AI Code Generation
1const { bigIntIndexPos } = require('fast-check-monorepo')2const { array, bigInt, constantFrom, property } = require('fast-check')3describe('bigIntIndexPos', () => {4 it('should return the position of the index of the provided value', () => {5 property(6 array(bigInt()),7 bigInt(),8 (array, value) => {9 const index = array.indexOf(value)10 return index === -1 ? true : bigIntIndexPos(array, value) === index11 }12 ).check()13 })14})15const { bigIntIndexPos } = require('fast-check-monorepo')16const { array, bigInt, constantFrom, property } = require('fast-check')17describe('bigIntIndexPos', () => {18 it('should return the position of the index of the provided value', () => {19 property(20 array(bigInt()),21 bigInt(),22 (array, value) => {23 const index = array.indexOf(value)24 return index === -1 ? true : bigIntIndexPos(array, value) === index25 }26 ).check()27 })28})29const { bigIntIndexPos } = require('fast-check-monorepo')30const { array, bigInt, constantFrom, property } = require('fast-check')31describe('bigIntIndexPos', () => {32 it('should return the position of the index of the provided value', () => {33 property(34 array(bigInt()),35 bigInt(),36 (array, value) => {37 const index = array.indexOf(value)38 return index === -1 ? true : bigIntIndexPos(array, value) === index39 }40 ).check()41 })42})43const { bigIntIndexPos } = require('fast-check-monorepo')44const { array, bigInt, constantFrom, property } = require('fast-check')
Using AI Code Generation
1const fc = require('fast-check');2const bigIntIndexPos = require('fast-check-monorepo').bigIntIndexPos;3const array = [1n, 2n, 3n, 4n, 5n, 6n, 7n, 8n, 9n, 10n];4const toFind = 5n;5const index = bigIntIndexPos(array, toFind);6console.log(index);7const arrayArb = fc.array(fc.bigInt(), 1, 20)8 .map(arr => arr.sort((a, b) => a - b));9const toFindArb = fc.bigInt();10fc.assert(11 fc.property(arrayArb, toFindArb, (arr, toFind) => {12 const index = bigIntIndexPos(arr, toFind);13 if (index === -1) {14 return !arr.includes(toFind);15 }16 return arr[index] === toFind;17 })18);19const bigIntIndexPos = require('fast-check-monorepo').bigIntIndexPos;20test('bigIntIndexPos', () => {21 const array = [1n, 2n, 3n, 4n, 5n, 6n, 7n, 8n, 9n, 10n];22 const toFind = 5n;23 const index = bigIntIndexPos(array, toFind);24 expect(index).toBe(4);25});
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