type_half.hpp

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#ifndef glm_core_type_half
#define glm_core_type_half

#include <cstdlib>

namespace glm{
namespace detail
{
    typedef short hdata;

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

    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;
        GLM_FUNC_DECL operator float() 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;
    };

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

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

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

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

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

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

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

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

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

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

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

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

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

}//namespace detail
}//namespace glm

#include "type_half.inl"

#endif//glm_core_type_half