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Asked: 2026-05-16T10:35:50+00:00

I have done porting of a c++ project with gtest tests to a c#

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I have done porting of a c++ project with gtest tests to a c# project having an nunit test. Now I encounter problems with floating point precision.

in the nunit test I have being not ok (red)

Assert.AreEqual(0.7, 7 * 0.1);

in the gtest test I have:

ASSERT_DOUBLE_EQ(0.7, 7 * 0.1);

which is ok (green)

The question now is WHY???

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1 Answer

  1. Editorial Team

    Alternatively you can add a third parameter, which is the maximum difference between the two values, as you can read here.

    public static void AreEqual (
    double expected,
    double actual,
    double delta
)

    Verifies that two specified doubles
    are equal, or within the specified
    accuracy of each other. The assertion
    fails if they are not within the
    specified accuracy of each other.

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