octo-deno/lib/make/numbers.js
2017-06-08 04:26:28 +02:00

57 lines
1.6 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
make.number = {
bool: function () {
return random.bool()
},
float: function () {
let n
if (random.chance(32)) {
switch (random.number(4)) {
case 0:
n = random.range(Number.MAX_VALUE, Number.MIN_VALUE)
break
case 1:
n = Math.pow(10, 1) / Math.pow(10, random.number(307))
break
case 2:
n = Math.pow(2, random.float() * random.float() * 64)
break
case 3:
n = Math.pow(10, random.range(1, 9)) / Math.pow(10, random.range(1, 9))
break
}
return n
}
switch (random.number(6)) {
default:
n = random.float()
}
return n
},
rangeNumber: function () {
return random.pick([1, 2, 3, 4, 6, 8, 16, 32, 64, make.number.tinyNumber])
},
tinyNumber: function () {
return Math.pow(2, random.number(12))
},
unsignedNumber: function () {
if (random.chance(2)) {
return Math.abs(make.number.any())
}
return Math.pow(2, random.number(65)) + random.number(3) - 1
},
evenNumber: function (number) {
return number % 2 === 1 ? ++number : number
},
any: function () {
let value = random.choose([
[10, make.number.float],
[10, [make.number.rangeNumber, make.number.tinyNumber]],
[1, make.number.unsignedNumber]
])
return random.chance(10) ? -value : value
}
}