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Provide Double and Float bit conversion functions as extensions in JS and Common

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Instance extension: Double/Float.toBits/toRawBits
Companion extension: Double/Float.Companion.fromBits

#KT-18264 Fixed
This commit is contained in:
Ilya Gorbunov
2017-08-31 07:05:35 +03:00
parent 044ccf1532
commit 132f2f88c2
6 changed files with 184 additions and 13 deletions
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libraries/stdlib/test/numbers/NumbersJVMTest.kt
-12
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@@ -41,18 +41,6 @@ class NumbersJVMTest {
assertEquals(java.lang.Float.NEGATIVE_INFINITY, Float.NEGATIVE_INFINITY)
}
@Test fun doubleToBits() {
assertEquals(0x400921fb54442d18L, kotlin.math.PI.toBits())
assertEquals(kotlin.math.PI, Double.fromBits(0x400921fb54442d18L))
for (value in listOf(Double.NEGATIVE_INFINITY, -Double.MAX_VALUE, -1.0, -Double.MIN_VALUE, -0.0, 0.0, Double.POSITIVE_INFINITY, Double.MAX_VALUE, 1.0, Double.MIN_VALUE)) {
assertEquals(value, Double.fromBits(value.toBits()))
assertEquals(value, Double.fromBits(value.toRawBits()))
}
assertTrue(Double.NaN.toBits().let(Double.Companion::fromBits).isNaN())
assertTrue(Double.NaN.toRawBits().let { Double.fromBits(it) }.isNaN())
}
@Test fun floatToBits() {
val PI_F = kotlin.math.PI.toFloat()
assertEquals(0x40490fdb, PI_F.toBits())