X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=benchmark-utils.js;h=121ef4ad375b6af43d43924677b070f88c024843;hb=347ca0fb0873b23e1fe0e0c83617d1deb4c7356b;hp=1e7914f95b78ec72175f5d5827bebd28980f1038;hpb=ed40d2b012a740d121f1951b9be91df341d6eaf3;p=benchmarks-js.git

diff --git a/benchmark-utils.js b/benchmark-utils.js
index 1e7914f..121ef4a 100644
--- a/benchmark-utils.js
+++ b/benchmark-utils.js
@@ -9,37 +9,85 @@ function secureRandom () {
   return crypto.randomBytes(4).readUInt32LE() / 0x100000000
 }
 
+/**
+ *  Generate a cryptographically secure random number in the [0,1[ range
+ *
+ * @param
+ */
+function secureRandomWithRandomValues () {
+  return crypto.getRandomValues(new Uint32Array(1))[0] / 0x100000000
+}
+
 /**
  * @param max
  * @param min
  * @returns
  */
-function generateRandomInteger (max, min = 0) {
-  if (max < 0) {
+function generateRandomInteger (max = Number.MAX_SAFE_INTEGER, min = 0) {
+  if (max < min || max < 0 || min < 0) {
     throw new RangeError('Invalid interval')
   }
   max = Math.floor(max)
-  if (min) {
-    if (max < min || min < 0) {
-      throw new RangeError('Invalid interval')
-    }
+  if (min != null && min !== 0) {
     min = Math.ceil(min)
     return Math.floor(secureRandom() * (max - min + 1)) + min
   }
   return Math.floor(secureRandom() * (max + 1))
 }
 
+/**
+ *
+ * @param max
+ * @param min
+ * @param negative
+ * @returns
+ */
+function generateRandomFloat (max = Number.MAX_VALUE, min = 0, negative = true) {
+  if (max < min || max < 0 || min < 0) {
+    throw new RangeError('Invalid interval')
+  }
+  const randomPositiveFloat = crypto.randomBytes(4).readUInt32LE() / 0xffffffff
+  const sign = negative && randomPositiveFloat < 0.5 ? -1 : 1
+  return sign * (randomPositiveFloat * (max - min) + min)
+}
+
 /**
  *
  * @param size
  * @param max
+ * @param numberGenerator
+ * @returns
+ */
+function generateRandomNumberArray (
+  size,
+  max = Number.MAX_VALUE,
+  numberGenerator = generateRandomFloat
+) {
+  const array = []
+  for (let i = 0; i < size; i++) {
+    array.push(numberGenerator(max))
+  }
+  return array
+}
+
+/**
+ *
+ * @param sizeMax
+ * @param numberMax
+ * @param numberGenerator
+ * @returns
  */
-function generateRandomIntegerArray (size, max = Number.MAX_SAFE_INTEGER) {
-  const integerArray = []
+function generateRandomObject (
+  sizeMax = 500,
+  numberMax = Number.MAX_VALUE,
+  numberGenerator = generateRandomFloat
+) {
+  const size = generateRandomInteger(sizeMax)
+  const object = {}
   for (let i = 0; i < size; i++) {
-    integerArray.push(generateRandomInteger(max))
+    object[i.toString()] = numberGenerator(numberMax)
   }
-  return integerArray
+  return object
 }
 
 /**
@@ -50,15 +98,12 @@ async function sleep (ms) {
   return new Promise(resolve => setTimeout(resolve, ms))
 }
 
-const LIST_FORMATTER = new Intl.ListFormat('en-US', {
-  style: 'long',
-  type: 'conjunction'
-})
-
 module.exports = {
   generateRandomInteger,
-  generateRandomIntegerArray,
+  generateRandomFloat,
+  generateRandomNumberArray,
+  generateRandomObject,
   sleep,
   secureRandom,
-  LIST_FORMATTER
+  secureRandomWithRandomValues
 }