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Added unit tests for parallel background worker; fixed some issues with the parallel background worker; added failing unit test for almost equal checks with doubles; fixed a typo

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git-svn-id: file:///srv/devel/repo-conversion/nusu@291 d2e56fa2-650e-0410-a79f-9358c0239efd
This commit is contained in:
Markus Ewald 2014-02-20 14:33:40 +00:00
parent a18cb63fc5
commit feac2b9c89
5 changed files with 334 additions and 41 deletions
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27
Source/FloatHelper.Test.cs
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@ -148,7 +148,12 @@ namespace Nuclex.Support {
// If both are negative -> fine
// If both are positive -> fine
// If different -> Measure both distances to zero in ulps and sum them
public void NegativeZeroEqualsPositiveZero() {
/// <summary>
/// Verifies that the negative floating point zero is within one ulp of the positive
/// floating point zero and vice versa
/// </summary>
[Test]
public void NegativeZeroFloatEqualsPositiveZero() {
float zero = 0.0f;
float zeroPlusOneUlp = FloatHelper.ReinterpretAsFloat(
FloatHelper.ReinterpretAsInt(zero) + 1
@ -163,6 +168,26 @@ namespace Nuclex.Support {
Assert.IsTrue(FloatHelper.AreAlmostEqual(zero, zeroMinusOneUlp, 1));
}
/// <summary>
/// Verifies that the negative double precision floating point zero is within one ulp
/// of the positive double precision floating point zero and vice versa
/// </summary>
[Test]
public void NegativeZeroDoubleEqualsPositiveZero() {
double zero = 0.0;
double zeroPlusOneUlp = FloatHelper.ReinterpretAsDouble(
FloatHelper.ReinterpretAsLong(zero) + 1
);
double zeroMinusOneUlp = -zeroPlusOneUlp;
bool test = FloatHelper.AreAlmostEqual(zeroMinusOneUlp, zeroPlusOneUlp, 1);
Assert.IsFalse(FloatHelper.AreAlmostEqual(zero, zeroPlusOneUlp, 0));
Assert.IsTrue(FloatHelper.AreAlmostEqual(zero, zeroPlusOneUlp, 1));
Assert.IsFalse(FloatHelper.AreAlmostEqual(zero, zeroMinusOneUlp, 0));
Assert.IsTrue(FloatHelper.AreAlmostEqual(zero, zeroMinusOneUlp, 1));
}
}
} // namespace Nuclex.Support