_detail.hpp

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#ifndef glm_core_detail
#define glm_core_detail

#include "setup.hpp"
#include <cassert>
#if(defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L))
#include <cstdint>
#endif

namespace glm{
namespace detail
{
    class half;

#if(defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) // C99 detected, 64 bit types available
    typedef int64_t                             sint64;
    typedef uint64_t                            uint64;
#elif(GLM_COMPILER & GLM_COMPILER_VC)
    typedef signed __int64                      sint64;
    typedef unsigned __int64                    uint64;
#elif(GLM_COMPILER & (GLM_COMPILER_GCC | GLM_COMPILER_LLVM_GCC | GLM_COMPILER_CLANG))
    __extension__ typedef signed long long      sint64;
    __extension__ typedef unsigned long long    uint64;
#elif(GLM_COMPILER & GLM_COMPILER_BC)
    typedef Int64                               sint64;
    typedef Uint64                              uint64;
#else//unknown compiler
    typedef signed long long                    sint64;
    typedef unsigned long long                  uint64;
#endif//GLM_COMPILER

    template<bool C>
    struct If
    {
        template<typename F, typename T>
        static GLM_FUNC_QUALIFIER T apply(F functor, const T& val)
        {
            return functor(val);
        }
    };

    template<>
    struct If<false>
    {
        template<typename F, typename T>
        static GLM_FUNC_QUALIFIER T apply(F, const T& val)
        {
            return val;
        }
    };

    //template <typename T>
    //struct traits
    //{
    //  static const bool is_signed = false;
    //  static const bool is_float = false;
    //  static const bool is_vector = false;
    //  static const bool is_matrix = false;
    //  static const bool is_genType = false;
    //  static const bool is_genIType = false;
    //  static const bool is_genUType = false;
    //};

    //template <>
    //struct traits<half>
    //{
    //  static const bool is_float = true;
    //  static const bool is_genType = true;
    //};

    //template <>
    //struct traits<float>
    //{
    //  static const bool is_float = true;
    //  static const bool is_genType = true;
    //};

    //template <>
    //struct traits<double>
    //{
    //  static const bool is_float = true;
    //  static const bool is_genType = true;
    //};

    //template <typename genType>
    //struct desc
    //{
    //  typedef genType                         type;
    //  typedef genType *                       pointer;
    //  typedef genType const*                  const_pointer;
    //  typedef genType const *const            const_pointer_const;
    //  typedef genType *const                  pointer_const;
    //  typedef genType &                       reference;
    //  typedef genType const&                  const_reference;
    //  typedef genType const&                  param_type;

    //  typedef typename genType::value_type    value_type;
    //  typedef typename genType::size_type     size_type;
    //  static const typename size_type         value_size;
    //};

    //template <typename genType>
    //const typename desc<genType>::size_type desc<genType>::value_size = genType::value_size();

    union uif32
    {
        GLM_FUNC_QUALIFIER uif32() :
            i(0)
        {}

        GLM_FUNC_QUALIFIER uif32(float f) :
            f(f)
        {}

        GLM_FUNC_QUALIFIER uif32(unsigned int i) :
            i(i)
        {}

        float f;
        unsigned int i;
    };

    union uif64
    {
        GLM_FUNC_QUALIFIER uif64() :
            i(0)
        {}

        GLM_FUNC_QUALIFIER uif64(double f) :
            f(f)
        {}

        GLM_FUNC_QUALIFIER uif64(uint64 i) :
            i(i)
        {}

        double f;
        uint64 i;
    };

    typedef uif32 uif;

    // int

    template <typename T>
    struct is_int
    {
        enum is_int_enum
        {
            _YES = 0,
            _NO = 1
        };
    };

#define GLM_DETAIL_IS_INT(T)    \
    template <>                 \
    struct is_int<T>            \
    {                           \
        enum is_int_enum        \
        {                       \
            _YES = 1,           \
            _NO = 0             \
        };                      \
    }

    // uint

    template <typename T>
    struct is_uint
    {
        enum is_uint_enum
        {
            _YES = 0,
            _NO = 1
        };
    };

#define GLM_DETAIL_IS_UINT(T)   \
    template <>                 \
    struct is_uint<T>           \
    {                           \
        enum is_uint_enum       \
        {                       \
            _YES = 1,           \
            _NO = 0             \
        };                      \
    }

    //GLM_DETAIL_IS_UINT(unsigned long long)

    // float

    template <typename T>
    struct is_float
    {
        enum is_float_enum
        {
            _YES = 0,
            _NO = 1
        };
    };

#define GLM_DETAIL_IS_FLOAT(T)  \
    template <>                 \
    struct is_float<T>          \
    {                           \
        enum is_float_enum      \
        {                       \
            _YES = 1,           \
            _NO = 0             \
        };                      \
    }

    GLM_DETAIL_IS_FLOAT(detail::half);
    GLM_DETAIL_IS_FLOAT(float);
    GLM_DETAIL_IS_FLOAT(double);
    GLM_DETAIL_IS_FLOAT(long double);

    // bool

    template <typename T>
    struct is_bool
    {
        enum is_bool_enum
        {
            _YES = 0,
            _NO = 1
        };
    };
    
    template <>
    struct is_bool<bool>
    {
        enum is_bool_enum
        {
            _YES = 1,
            _NO = 0
        };
    };
    
    // vector

    template <typename T>
    struct is_vector
    {
        enum is_vector_enum
        {
            _YES = 0,
            _NO = 1
        };
    };

#   define GLM_DETAIL_IS_VECTOR(TYPE) \
        template <typename T> \
        struct is_vector<TYPE<T> > \
        { \
            enum is_vector_enum \
            { \
                _YES = 1, \
                _NO = 0 \
            }; \
        }

    // matrix

    template <typename T>
    struct is_matrix
    {
        enum is_matrix_enum
        {
            _YES = 0,
            _NO = 1
        };
    };

#define GLM_DETAIL_IS_MATRIX(T) \
    template <>                 \
    struct is_matrix            \
    {                           \
        enum is_matrix_enum     \
        {                       \
            _YES = 1,           \
            _NO = 0             \
        };                      \
    }

    // type

    template <typename T>
    struct type
    {
        enum type_enum
        {
            is_float = is_float<T>::_YES,
            is_int = is_int<T>::_YES,
            is_uint = is_uint<T>::_YES,
            is_bool = is_bool<T>::_YES
        };
    };
    
    // type
    
    typedef signed char                         int8;
    typedef signed short                        int16;
    typedef signed int                          int32;
    typedef detail::sint64                      int64;
    
    typedef unsigned char                       uint8;
    typedef unsigned short                      uint16;
    typedef unsigned int                        uint32;
    typedef detail::uint64                      uint64;
    
    typedef detail::half                        float16;
    typedef float                               float32;
    typedef double                              float64;
    
    // float_or_int_trait 

    struct float_or_int_value
    {
        enum
        {
            GLM_ERROR,
            GLM_FLOAT,
            GLM_INT
        };
    };

    template <typename T>
    struct float_or_int_trait
    {
        enum{ID = float_or_int_value::GLM_ERROR};
    };

    template <>
    struct float_or_int_trait<int8>
    {
        enum{ID = float_or_int_value::GLM_INT};
    };

    template <>
    struct float_or_int_trait<int16>
    {
        enum{ID = float_or_int_value::GLM_INT};
    };

    template <>
    struct float_or_int_trait<int32>
    {
        enum{ID = float_or_int_value::GLM_INT};
    };

    template <>
    struct float_or_int_trait<int64>
    {
        enum{ID = float_or_int_value::GLM_INT};
    };

    template <>
    struct float_or_int_trait<uint8>
    {
        enum{ID = float_or_int_value::GLM_INT};
    };

    template <>
    struct float_or_int_trait<uint16>
    {
        enum{ID = float_or_int_value::GLM_INT};
    };

    template <>
    struct float_or_int_trait<uint32>
    {
        enum{ID = float_or_int_value::GLM_INT};
    };

    template <>
    struct float_or_int_trait<uint64>
    {
        enum{ID = float_or_int_value::GLM_INT};
    };

    template <>
    struct float_or_int_trait<float16>
    {
        enum{ID = float_or_int_value::GLM_FLOAT};
    };

    template <>
    struct float_or_int_trait<float32>
    {
        enum{ID = float_or_int_value::GLM_FLOAT};
    };

    template <>
    struct float_or_int_trait<float64>
    {
        enum{ID = float_or_int_value::GLM_FLOAT};
    };

}//namespace detail
}//namespace glm

#if((GLM_COMPILER & GLM_COMPILER_VC) && (GLM_COMPILER >= GLM_COMPILER_VC2005))
#   define GLM_DEPRECATED __declspec(deprecated)
#   define GLM_ALIGN(x) __declspec(align(x)) 
#   define GLM_ALIGNED_STRUCT(x) __declspec(align(x)) struct 
#   define GLM_RESTRICT __declspec(restrict)
#   define GLM_RESTRICT_VAR __restrict
#elif((GLM_COMPILER & (GLM_COMPILER_GCC | GLM_COMPILER_LLVM_GCC)) && (GLM_COMPILER >= GLM_COMPILER_GCC31))
#   define GLM_DEPRECATED __attribute__((__deprecated__))
#   define GLM_ALIGN(x) __attribute__((aligned(x)))
#   define GLM_ALIGNED_STRUCT(x) struct __attribute__((aligned(x)))
#   if(GLM_COMPILER >= GLM_COMPILER_GCC33)
#       define GLM_RESTRICT __restrict__
#       define GLM_RESTRICT_VAR __restrict__
#   else
#       define GLM_RESTRICT
#       define GLM_RESTRICT_VAR
#   endif
#   define GLM_RESTRICT __restrict__
#   define GLM_RESTRICT_VAR __restrict__
#else
#   define GLM_DEPRECATED
#   define GLM_ALIGN
#   define GLM_ALIGNED_STRUCT(x) 
#   define GLM_RESTRICT
#   define GLM_RESTRICT_VAR
#endif//GLM_COMPILER

#endif//glm_core_detail