myxlib/src/myx/math/almost_equal_relative.cpp

43 lines
799 B
C++
Raw Normal View History

#include <myx/math/almost_equal_relative.hpp>
#include <cmath>
namespace myx {
namespace math {
bool almost_equal_relative( const float a, const float b,
const float maxRelDiff )
{
float diff = fabsf( a - b );
float aN = fabsf( a );
float bN = fabsf( b );
float largest = ( bN > aN ) ? bN : aN;
if ( diff <= largest * maxRelDiff )
{
return( true );
}
return( false );
}
bool almost_equal_relative( const double a, const double b,
const double maxRelDiff )
{
double diff = fabs( a - b );
double aN = fabs( a );
double bN = fabs( b );
double largest = ( bN > aN ) ? bN : aN;
if ( diff <= largest * maxRelDiff )
{
return( true );
}
return( false );
}
} // namespace math
} // namespace myx