| 1 | import { randomInt } from 'node:crypto' |
| 2 | |
| 3 | import { bench, group, run } from 'tatami-ng' |
| 4 | |
| 5 | import { |
| 6 | secureRandom, |
| 7 | secureRandomWithRandomValues, |
| 8 | } from './benchmark-utils.mjs' |
| 9 | |
| 10 | const maximum = 281474976710655 |
| 11 | |
| 12 | /** |
| 13 | * @param max |
| 14 | * @param min |
| 15 | * @returns |
| 16 | */ |
| 17 | function getSecureRandomInteger (max = Number.MAX_SAFE_INTEGER, min = 0) { |
| 18 | if (max < min || max < 0 || min < 0) { |
| 19 | throw new RangeError('Invalid interval') |
| 20 | } |
| 21 | max = Math.floor(max) |
| 22 | if (min !== 0) { |
| 23 | min = Math.ceil(min) |
| 24 | return Math.floor(secureRandom() * (max - min + 1)) + min |
| 25 | } |
| 26 | return Math.floor(secureRandom() * (max + 1)) |
| 27 | } |
| 28 | |
| 29 | /** |
| 30 | * @param max |
| 31 | * @param min |
| 32 | * @returns |
| 33 | */ |
| 34 | function getSecureRandomIntegerWithRandomValues ( |
| 35 | max = Number.MAX_SAFE_INTEGER, |
| 36 | min = 0 |
| 37 | ) { |
| 38 | if (max < min || max < 0 || min < 0) { |
| 39 | throw new RangeError('Invalid interval') |
| 40 | } |
| 41 | max = Math.floor(max) |
| 42 | if (min !== 0) { |
| 43 | min = Math.ceil(min) |
| 44 | return Math.floor(secureRandomWithRandomValues() * (max - min + 1)) + min |
| 45 | } |
| 46 | return Math.floor(secureRandomWithRandomValues() * (max + 1)) |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * @param max |
| 51 | * @param min |
| 52 | * @returns |
| 53 | */ |
| 54 | function getRandomInteger (max = Number.MAX_SAFE_INTEGER, min = 0) { |
| 55 | if (max < min || max < 0 || min < 0) { |
| 56 | throw new RangeError('Invalid interval') |
| 57 | } |
| 58 | max = Math.floor(max) |
| 59 | if (min !== 0) { |
| 60 | min = Math.ceil(min) |
| 61 | return Math.floor(Math.random() * (max - min + 1)) + min |
| 62 | } |
| 63 | return Math.floor(Math.random() * (max + 1)) |
| 64 | } |
| 65 | |
| 66 | group('Random Integer Generator', () => { |
| 67 | bench('Secure random integer generator', () => { |
| 68 | getSecureRandomInteger(maximum) |
| 69 | }) |
| 70 | bench('Secure random with getRandomValues() integer generator', () => { |
| 71 | getSecureRandomIntegerWithRandomValues(maximum) |
| 72 | }) |
| 73 | bench('Crypto random integer generator', () => { |
| 74 | randomInt(maximum) |
| 75 | }) |
| 76 | bench('Math random integer generator', () => { |
| 77 | getRandomInteger(maximum) |
| 78 | }) |
| 79 | }) |
| 80 | |
| 81 | await run({ |
| 82 | units: true, |
| 83 | }) |