constants.h

// Description: Mathematical constants
// Documentation: numbers.txt

#ifndef PASTELSYS_CONSTANTS_H
#define PASTELSYS_CONSTANTS_H

#include "pastel/sys/mytypes.h"

#include <string>

namespace Pastel
{

    //! Converts a text string to number.
    template <
        typename Real,
        Requires<std::is_floating_point<Real>> = 0>
    Real stringAsReal(const std::string& number);

    //! Returns pi constant.
    template <
        typename Real,
        Requires<std::is_floating_point<Real>> = 0>
    Real constantPi();

    //! Returns neper constant.
    template <
        typename Real,
        Requires<std::is_floating_point<Real>> = 0>
    Real constantNeper();

    //! Returns ln(2) constant.
    template <
        typename Real,
        Requires<std::is_floating_point<Real>> = 0>
    Real constantLn2();

    //! Returns Euler-Mascheroni constant.
    template <
        typename Real,
        Requires<std::is_floating_point<Real>> = 0>
    Real constantEulerMascheroni();

}

#include "pastel/sys/math/constants.hpp"

#endif