Almond/libmandel/src/Types.cpp

#include "Types.h"
#include <sstream>


namespace mnd
{
#ifdef WITH_BOOST
    std::string toString(const Real& num)
    {
        return num.str();
    }

    std::string toLegibleString(const Real& num)
    {
        if (num == Real(0.0)) {
            return "0";
        }
        int exponent = std::floor(static_cast<float>(mnd::log(num)) / ::logf(10.000001));
        float fac = static_cast<float>(num / mnd::pow(Real(10), Real(exponent)));
        std::stringstream ss;
        ss.precision(3);
        ss << std::fixed << fac << "e";
        if (exponent < 0)
            ss << "-" << -exponent;
        else
            ss << "+" << exponent;
        return ss.str();
    }
#else // !WITH_BOOST
    std::string toString(const Real& num)
    {
        std::stringstream ss;
        ss << num;
        return ss.str();
    }
#endif // WITH_BOOST


/*
    template<>
    constexpr Real precision<float>(void)
    {
        return 1.0e-7;
    }

    template<>
    constexpr Real precision<double>(void)
    {
        return 1.0e-15;
    }

#ifdef WITH_QD
    template<>
    constexpr Real precision<DoubleDouble>(void)
    {
        return Real("1.0e-29");
    }

    template<>
    constexpr Real precision<QuadDouble>(void)
    {
        return Real("1.0e-57");
    }
#endif // WITH_QD
#ifdef WITH_BOOST
    template<>
    constexpr Real precision<Float128>(void)
    {
        return Real("1.0e-29");
    }

    template<>
    constexpr Real precision<Float256>(void)
    {
        return Real("1.0e-60");
    }
#endif // WITH_BOOST
*/
}