mirror of https://github.com/catchorg/Catch2.git
89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
/*
|
|
* catch_approx.hpp
|
|
* Catch
|
|
*
|
|
* Created by Phil on 28/04/2011.
|
|
* Copyright 2010 Two Blue Cubes Ltd. All rights reserved.
|
|
*
|
|
* Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
*
|
|
*/
|
|
#ifndef TWOBLUECUBES_CATCH_APPROX_HPP_INCLUDED
|
|
#define TWOBLUECUBES_CATCH_APPROX_HPP_INCLUDED
|
|
|
|
#include "catch_capture.hpp"
|
|
|
|
#include <cmath>
|
|
|
|
namespace Catch
|
|
{
|
|
|
|
// !TBD Need to clean this all up
|
|
#define CATCH_absTol 1e-10
|
|
#define CATCH_relTol 1e-10
|
|
|
|
inline double catch_max( double x, double y )
|
|
{
|
|
return x > y ? x : y;
|
|
}
|
|
namespace Detail
|
|
{
|
|
class Approx
|
|
{
|
|
public:
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// !TBD more generic
|
|
explicit Approx
|
|
(
|
|
double d
|
|
)
|
|
: m_d( d )
|
|
{
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
template<typename T>
|
|
friend bool operator ==
|
|
(
|
|
const T& lhs,
|
|
const Approx& rhs
|
|
)
|
|
{
|
|
// !TBD Use proper tolerance
|
|
// From: http://realtimecollisiondetection.net/blog/?p=89
|
|
// see also: http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm
|
|
return fabs( lhs - rhs.m_d ) <= catch_max( CATCH_absTol, CATCH_relTol * catch_max( fabs(lhs), fabs(rhs.m_d) ) );
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
template<typename T>
|
|
friend bool operator !=
|
|
(
|
|
const T& lhs,
|
|
const Approx& rhs
|
|
)
|
|
{
|
|
return ! operator==( lhs, rhs );
|
|
}
|
|
|
|
double m_d;
|
|
};
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
template<>
|
|
inline std::string toString<Detail::Approx>
|
|
(
|
|
const Detail::Approx& value
|
|
)
|
|
{
|
|
std::ostringstream oss;
|
|
oss << "Approx( " << value.m_d << ")";
|
|
return oss.str();
|
|
}
|
|
|
|
} // end namespace Catch
|
|
|
|
#endif // TWOBLUECUBES_CATCH_APPROX_HPP_INCLUDED
|