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Test that known Floats can fit in FloatArray without over/underflow

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But some precision loss can still happen in JS.

Relates to KT-24975
This commit is contained in:
Ilya Gorbunov
2020-02-25 21:43:04 +03:00
parent d88d2cb058
commit a225842f9b
1 changed files with 10 additions and 0 deletions
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libraries/stdlib/test/numbers/NumbersTest.kt
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@@ -144,6 +144,16 @@ class NumbersTest {
doTestNumber(Float.NaN, isNaN = true) doTestNumber(Float.NaN, isNaN = true)
} }
@Test fun floatFitsInFloatArray() {
val values = listOf(1.0F, 0.0F, Float.MAX_VALUE, Float.MIN_VALUE, Float.POSITIVE_INFINITY, Float.NEGATIVE_INFINITY, Float.NaN)
val valuesArray = values.toFloatArray()
for (index in values.indices) {
val value = values[index]
val tolerance = if (value == Float.MIN_VALUE) 0.001 * value else 0.0000001 * value
assertAlmostEquals(value, valuesArray[index], tolerance)
}
}
private fun doTestNumber(value: Double, isNaN: Boolean = false, isInfinite: Boolean = false) { private fun doTestNumber(value: Double, isNaN: Boolean = false, isInfinite: Boolean = false) {
assertEquals(isNaN, value.isNaN(), "Expected $value to have isNaN: $isNaN") assertEquals(isNaN, value.isNaN(), "Expected $value to have isNaN: $isNaN")