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third-party/cppunit/cppunit/src/cppunit/TestAssert.cpp

 

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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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