///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
/// Copyright (c) 2005 - 2012 G-Truc Creation (www.g-truc.net)
/// Permission is hereby granted, free of charge, to any person obtaining a copy
/// of this software and associated documentation files (the "Software"), to deal
/// in the Software without restriction, including without limitation the rights
/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
/// copies of the Software, and to permit persons to whom the Software is
/// furnished to do so, subject to the following conditions:
///
/// The above copyright notice and this permission notice shall be included in
/// all copies or substantial portions of the Software.
///
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
/// THE SOFTWARE.
///
/// @ref core
/// @file glm/core/type_half.hpp
/// @date 2008-08-17 / 2011-09-20
/// @author Christophe Riccio
///////////////////////////////////////////////////////////////////////////////////

#ifndef glm_core_type_half
#define glm_core_type_half

#include <cstdlib>

namespace glm {
namespace detail {
typedef short hdata;

float toFloat32(hdata value);
hdata toFloat16(float const & value);

/// 16-bit floating point type.
/// @ingroup gtc_half_float
class half
{
public:
    // Constructors
    GLM_FUNC_DECL half();
    GLM_FUNC_DECL half(half const & s);

    template<typename U>
    GLM_FUNC_DECL explicit half(U const & s);

    // Cast
    template<typename U>
    GLM_FUNC_DECL operator U() const;

    // Unary updatable operators
    GLM_FUNC_DECL half & operator=(half const & s);
    GLM_FUNC_DECL half & operator+=(half const & s);
    GLM_FUNC_DECL half & operator-=(half const & s);
    GLM_FUNC_DECL half & operator*=(half const & s);
    GLM_FUNC_DECL half & operator/=(half const & s);
    GLM_FUNC_DECL half & operator++();
    GLM_FUNC_DECL half & operator--();

    GLM_FUNC_DECL float toFloat() const
    {
        return toFloat32(data);
    }

    GLM_FUNC_DECL hdata _data() const
    {
        return data;
    }

private:
    hdata data;
};

half operator+(half const & s1, half const & s2);

half operator-(half const & s1, half const & s2);

half operator*(half const & s1, half const & s2);

half operator/(half const & s1, half const & s2);

// Unary constant operators
half operator-(half const & s);

half operator--(half const & s, int);

half operator++(half const & s, int);

bool operator==(
  detail::half const & x,
  detail::half const & y);

bool operator!=(
  detail::half const & x,
  detail::half const & y);

bool operator<(
  detail::half const & x,
  detail::half const & y);

bool operator<=(
  detail::half const & x,
  detail::half const & y);

bool operator>(
  detail::half const & x,
  detail::half const & y);

bool operator>=(
  detail::half const & x,
  detail::half const & y);

} //namespace detail
} //namespace glm

#include "type_half.inl"

#endif //glm_core_type_half
