85 lines
2.1 KiB
JavaScript
85 lines
2.1 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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const make = require('../make')
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const random = require('../random')
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class number extends make {
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static bool () {
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return random.bool()
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}
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static float () {
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let n
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if (random.chance(32)) {
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switch (random.number(4)) {
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case 0:
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n = random.range(Number.MIN_VALUE, Number.MAX_VALUE)
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break
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case 1:
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n = Math.pow(10, 1) / Math.pow(10, random.number(307))
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break
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case 2:
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n = Math.pow(2, random.float() * random.float() * 64)
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break
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case 3:
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n = Math.pow(10, random.range(1, 9)) / Math.pow(10, random.range(1, 9))
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break
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}
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return n
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}
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switch (random.number(6)) {
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default:
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n = random.float()
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}
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return n
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}
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static range () {
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return random.pick([1, 2, 3, 4, 6, 8, 16, 32, 64, number.tiny])
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}
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static frange (min, max, precision) {
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let x = Math.random() * (min - max) + max
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if (precision) {
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let power = Math.pow(10, precision || 0)
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x = Math.round(x * power) / power
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}
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return x
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}
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static tiny () {
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return Math.pow(2, random.number(12))
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}
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static unsigned () {
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if (random.chance(2)) {
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return Math.abs(number.any())
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}
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return Math.pow(2, random.number(random.number(65))) + random.number(3) - 1
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}
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static even(number) {
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return number % 2 === 1 ? ++number : number
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}
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static interesting () {
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return random.choose([
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[10, [-128, -1, 0, 1, 16, 32, 64, 100, 127]],
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[7, [-32768, -129, 128, 255, 256, 512, 1000, 1024, 4096, 32767]],
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[1, [-2147483648, -100663046, -32769, 32768, 65535, 65536, 100663045, 2147483647]]
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])
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}
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static any () {
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let value = random.choose([
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[10, number.float],
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[10, [number.range, number.tiny]],
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[1, number.unsigned]
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])
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return random.chance(10) ? -value : value
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}
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}
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module.exports = number
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