common.hpp

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#ifndef VIENNASHE_TESTS_COMMON_HPP
#define VIENNASHE_TESTS_COMMON_HPP
/* ============================================================================
   Copyright (c) 2011-2022, Institute for Microelectronics,
                            Institute for Analysis and Scientific Computing,
                            TU Wien.
 
                            -----------------
     ViennaSHE - The Vienna Spherical Harmonics Expansion Boltzmann Solver
                            -----------------
 
                    http://viennashe.sourceforge.net/
 
   License:         MIT (X11), see file LICENSE in the base directory
=============================================================================== */
 
#include "viennashe/forwards.h"
#include "viennashe/log/log.hpp"
 
#include <cmath>
#include <algorithm>
 
namespace viennashe
{
  namespace testing
  {
 
    inline bool fuzzy_equal(double is, double should, double tol = 1e-1)
    {
      if ( (is < should || is > should)
          && std::fabs(is - should) / std::max(std::abs(is), std::fabs(should)) > tol)
      {
        viennashe::log::error() << "fuzzy_equal(): tol    = " << tol    << std::endl;
        viennashe::log::error() << "fuzzy_equal(): is     = " << is     << std::endl;
        viennashe::log::error() << "fuzzy_equal(): should = " << should << std::endl;
        viennashe::log::error() << "fuzzy_equal(): diff   = " << std::fabs(is - should) / std::max(std::fabs(is), std::fabs(should)) << std::endl;
        return false;
      }
      return true;
    }
 
  } // namespace tests
} // namespace viennashe
 
#endif  /* VIENNASHE_TESTS_COMMON_HPP */