FloatingPointComparison.cpp

Go to the documentation of this file.

// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
//   NScD Oak Ridge National Laboratory, European Spallation Source,
//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
//-----------------------------------------------------------------------------
// Includes
//-----------------------------------------------------------------------------
#include "MantidKernel/FloatingPointComparison.h"
#include "MantidKernel/System.h"
 
#include <cmath>
#include <limits>
 
namespace Mantid::Kernel {
 
template <typename TYPE> bool equals(const TYPE x, const TYPE y) {
  return !(std::fabs(x - y) > std::numeric_limits<TYPE>::epsilon());
}
 
template <typename T> MANTID_KERNEL_DLL bool ltEquals(const T x, const T y) { return (equals(x, y) || x < y); }
 
template <typename T> MANTID_KERNEL_DLL bool gtEquals(const T x, const T y) { return (equals(x, y) || x > y); }
 
// Concrete instantiations
template DLLExport bool equals<double>(const double, const double);
template DLLExport bool equals<float>(const float, const float);
template DLLExport bool ltEquals<double>(const double, const double);
template DLLExport bool ltEquals<float>(const float, const float);
template DLLExport bool gtEquals<double>(const double, const double);
template DLLExport bool gtEquals<float>(const float, const float);
} // namespace Mantid::Kernel