view release on metacpan or  search on metacpan

include/boost/test/floating_point_comparison.hpp  view on Meta::CPAN

// **************             close_at_tolerance               ************** //
// ************************************************************************** //

template<typename FPT, typename PersentType = FPT >
class close_at_tolerance {
public:
    // Public typedefs
    typedef bool result_type;

    // Constructor
    explicit    close_at_tolerance( PersentType percentage_tolerance, floating_point_comparison_type fpc_type = FPC_STRONG ) 
    : p_fraction_tolerance( static_cast<FPT>(0.01)*percentage_tolerance ), p_strong_or_weak( fpc_type ==  FPC_STRONG ) {}

    bool        operator()( FPT left, FPT right ) const
    {
        FPT diff = tt_detail::fpt_abs( left - right );
        FPT d1   = tt_detail::safe_fpt_division( diff, tt_detail::fpt_abs( right ) );
        FPT d2   = tt_detail::safe_fpt_division( diff, tt_detail::fpt_abs( left ) );
        
        return p_strong_or_weak ? (d1 <= p_fraction_tolerance.get() && d2 <= p_fraction_tolerance.get()) 
                                : (d1 <= p_fraction_tolerance.get() || d2 <= p_fraction_tolerance.get());
    }

include/boost/test/floating_point_comparison.hpp  view on Meta::CPAN

// ************************************************************************** //
// **************               check_is_close                 ************** //
// ************************************************************************** //

struct check_is_close_t {
    // Public typedefs
    typedef bool result_type;

    template<typename FPT, typename PersentType>
    bool
    operator()( FPT left, FPT right, PersentType percentage_tolerance, floating_point_comparison_type fpc_type = FPC_STRONG )
    {
        close_at_tolerance<FPT,PersentType> pred( percentage_tolerance, fpc_type );

        return pred( left, right );
    }
};

namespace {
check_is_close_t check_is_close;
}

//____________________________________________________________________________//