Igor Yakovlev
64 lines
2.8 KiB
Kotlin
64 lines
2.8 KiB
Kotlin
/*
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* Copyright 2010-2021 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.math
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//
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// NOTE: THIS FILE IS AUTO-GENERATED by the mathTestGeneratorMain.kt
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// See: https://github.com/JetBrains/kotlin/tree/master/libraries/stdlib
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//
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import kotlin.math.*
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import kotlin.test.*
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//workaround about method with receiver
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internal fun powWrapper(x: Double, y: Double): Double = x.pow(y)
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private fun getMantissa(d: Double): Double = Double.fromBits(((d.toBits().toULong() and 0x800fffffffffffffUL) or 0x3ff0000000000000UL).toLong())
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private fun getExp(d: Double): Int = (((d.toBits() shr 52) and 0x7FF) - 1023).toInt()
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private fun compare(arg1: Double, arg2: Double?, result1: Double, result2: Double, exact: Boolean = false) {
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val difference: Any? = when {
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result1.isNaN() -> if (result2.isNaN()) null else result1
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result1.isInfinite() -> if (result2.isInfinite() && result1.sign == result2.sign) null else result1
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result2.isNaN() -> result2
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result2.isInfinite() -> result2
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else -> {
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if (exact) {
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if (result1.toBits() == result2.toBits()) null else abs(result1 - result2)
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} else {
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val (toCompare1, toCompare2) = when (getExp(result1) - getExp(result2)) {
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0 -> getMantissa(result1) to getMantissa(result2)
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1 -> getMantissa(result1) to getMantissa(result2) / 2.0
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-1 -> getMantissa(result1) / 2.0 to getMantissa(result2)
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else -> result1 to result2
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}
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abs(toCompare1 - toCompare2).takeIf { it > 1e-14 }
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}
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}
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}
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assertNull(difference, "ARG1 = " + arg1 + (if (arg2 == null) "" else " and ARG2 = " + arg2))
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}
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internal fun checkAnswers(function: Function1<Double, Double>, arguments: Array<ULong>, answers: Array<ULong>, exact: Boolean) {
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arguments.forEachIndexed { i, x ->
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val argument1 = Double.fromBits(x.toLong())
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val answer = Double.fromBits(answers[i].toLong())
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compare(argument1, null, answer, function(argument1), exact = exact)
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}
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}
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internal fun checkAnswers(function: Function2<Double, Double, Double>, arguments: Array<ULong>, answers: Array<ULong>, exact: Boolean) {
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arguments
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.flatMap { lhsElem -> arguments.map { rhsElem -> lhsElem to rhsElem } }
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.forEachIndexed { i, x ->
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val argument1 = Double.fromBits(x.first.toLong())
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val argument2 = Double.fromBits(x.second.toLong())
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val answer = Double.fromBits(answers[i].toLong())
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compare(argument1, argument2, answer, function(argument1, argument2), exact = exact)
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}
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} |