random.js

   1 const Benchmark = require('benny')
   2 const { secureRandom } = require('./benchmark-utils')
   3
   4 const maximum = Number.MAX_SAFE_INTEGER
   5
   6 /**
   7  * @param max
   8  * @param min
   9  * @returns
  10  */
  11 function getSecureRandomInteger (max = Number.MAX_SAFE_INTEGER, min = 0) {
  12   max = Math.floor(max)
  13   if (min) {
  14     min = Math.ceil(min)
  15     return Math.floor(secureRandom() * (max - min + 1)) + min
  16   }
  17   return Math.floor(secureRandom() * (max + 1))
  18 }
  19
  20 /**
  21  * @param max
  22  * @param min
  23  * @returns
  24  */
  25 function getRandomInteger (max = Number.MAX_SAFE_INTEGER, min = 0) {
  26   max = Math.floor(max)
  27   if (min) {
  28     min = Math.ceil(min)
  29     return Math.floor(Math.random() * (max - min + 1)) + min
  30   }
  31   return Math.floor(Math.random() * (max + 1))
  32 }
  33
  34 Benchmark.suite(
  35   'Random Integer Generator',
  36   Benchmark.add('Secure random integer generator', function () {
  37     getSecureRandomInteger(maximum)
  38   }),
  39   Benchmark.add('Random integer generator', function () {
  40     getRandomInteger(maximum)
  41   }),
  42   Benchmark.cycle(),
  43   Benchmark.complete(),
  44   Benchmark.save({ file: 'random-integer-generator', format: 'chart.html' }),
  45   Benchmark.save({ file: 'random-integer-generator', format: 'table.html' })
  46 )