47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
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#include <cppunit/TestAssert.h>
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#include <cppunit/portability/FloatingPoint.h>
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CPPUNIT_NS_BEGIN
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void
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assertDoubleEquals( double expected,
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double actual,
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double delta,
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SourceLine sourceLine,
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const std::string &message )
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{
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AdditionalMessage msg( "Delta : " +
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assertion_traits<double>::toString(delta) );
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msg.addDetail( AdditionalMessage(message) );
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bool equal;
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if ( floatingPointIsFinite(expected) && floatingPointIsFinite(actual) )
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equal = fabs( expected - actual ) <= delta;
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else
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{
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// If expected or actual is not finite, it may be +inf, -inf or NaN (Not a Number).
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// Value of +inf or -inf leads to a true equality regardless of delta if both
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// expected and actual have the same value (infinity sign).
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// NaN Value should always lead to a failed equality.
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if ( floatingPointIsUnordered(expected) || floatingPointIsUnordered(actual) )
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{
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equal = false; // expected or actual is a NaN
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}
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else // ordered values, +inf or -inf comparison
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{
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equal = expected == actual;
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}
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}
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Asserter::failNotEqualIf( !equal,
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assertion_traits<double>::toString(expected),
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assertion_traits<double>::toString(actual),
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sourceLine,
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msg,
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"double equality assertion failed" );
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}
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CPPUNIT_NS_END
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