nikita.movshin
65244b4bea
Change the copyright from "JetBrains s.r.o." to "JetBrains s.r.o. and Kotlin Project contributors" Update only 2 lines copyright.
27 lines
869 B
Kotlin
27 lines
869 B
Kotlin
/*
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* Copyright 2010-2018 JetBrains s.r.o. and Kotlin Programming Language contributors.
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* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
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*/
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package test.random
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import kotlin.math.pow
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import kotlin.random.*
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import kotlin.test.*
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class XorWowRandomImplTest {
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@Test
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fun predefinedSequence() {
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val seed = 1
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val addend = (seed shl 10) xor (seed ushr 4)
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@Suppress("INVISIBLE_REFERENCE", "INVISIBLE_MEMBER")
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val random: Random = XorWowRandom(seed, 0, 0, 0, 0, addend)
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// differs from reference 0.8178000247146859 because of different double mixing algorithm
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assertEquals(0.817799582443095, random.nextDouble())
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assertEquals(0.8407576507888734, random.nextBits(31) / (2.0.pow(31)))
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assertEquals(533150816, random.nextInt())
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}
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} |