IceTypes.h

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// Include Guard
#ifndef __ICETYPES_H__
#define __ICETYPES_H__

// Things to help us compile on non-windows platforms
#if 0
#if defined(__MACOSX__) || defined(__APPLE__)
#undef bool
#define bool char
#undef true
#define true ((bool)-1)
#undef false
#define false ((bool)0)
#endif // mac stuff
#endif


        #define USE_HANDLE_MANAGER

        // Constants
        #define PI                                      3.1415926535897932384626433832795028841971693993751f    //!< PI
        #define HALFPI                          1.57079632679489661923f                                                                 //!< 0.5 * PI
        #define TWOPI                           6.28318530717958647692f                                                                 //!< 2.0 * PI
        #define INVPI                           0.31830988618379067154f                                                                 //!< 1.0 / PI

        #define RADTODEG                        57.2957795130823208768f                                                                 //!< 180.0 / PI, convert radians to degrees
        #define DEGTORAD                        0.01745329251994329577f                                                                 //!< PI / 180.0, convert degrees to radians

        #define EXP                                     2.71828182845904523536f                                                                 //!< e
        #define INVLOG2                         3.32192809488736234787f                                                                 //!< 1.0 / log10(2)
        #define LN2                                     0.693147180559945f                                                                              //!< ln(2)
        #define INVLN2                          1.44269504089f                                                                                  //!< 1.0f / ln(2)

        #define INV3                            0.33333333333333333333f                                                                 //!< 1/3
        #define INV6                            0.16666666666666666666f                                                                 //!< 1/6
        #define INV7                            0.14285714285714285714f                                                                 //!< 1/7
        #define INV9                            0.11111111111111111111f                                                                 //!< 1/9
        #define INV255                          0.00392156862745098039f                                                                 //!< 1/255

        #define SQRT2                           1.41421356237f                                                                                  //!< sqrt(2)
        #define INVSQRT2                        0.707106781188f                                                                                 //!< 1 / sqrt(2)

        #define SQRT3                           1.73205080757f                                                                                  //!< sqrt(3)
        #define INVSQRT3                        0.577350269189f                                                                                 //!< 1 / sqrt(3)

        #define null                            0                                                                                                               //!< our own NULL pointer

        // Custom types used in ICE
        typedef signed char                     sbyte;          
        typedef unsigned char           ubyte;          
        typedef signed short            sword;          
        typedef unsigned short          uword;          
        typedef signed int                      sdword;         
        typedef unsigned int            udword;         
        typedef signed __int64          sqword;         
        typedef unsigned __int64        uqword;         
        typedef float                           float32;        
        typedef double                          float64;        

        ICE_COMPILE_TIME_ASSERT(sizeof(bool)==1);       // ...otherwise things might fail with VC++ 4.2 !
        ICE_COMPILE_TIME_ASSERT(sizeof(ubyte)==1);
        ICE_COMPILE_TIME_ASSERT(sizeof(sbyte)==1);
        ICE_COMPILE_TIME_ASSERT(sizeof(sword)==2);
        ICE_COMPILE_TIME_ASSERT(sizeof(uword)==2);
        ICE_COMPILE_TIME_ASSERT(sizeof(udword)==4);
        ICE_COMPILE_TIME_ASSERT(sizeof(sdword)==4);
        ICE_COMPILE_TIME_ASSERT(sizeof(uqword)==8);
        ICE_COMPILE_TIME_ASSERT(sizeof(sqword)==8);

        #define DECLARE_ICE_HANDLE(name)        struct name##__ { int unused; }; typedef struct name##__ *name

        typedef udword                          DynID;          
#ifdef USE_HANDLE_MANAGER
        typedef udword                          KID;            
//      DECLARE_ICE_HANDLE(KID);
#else
        typedef uword                           KID;            
#endif
        typedef udword                          RTYPE;          
        #define INVALID_ID                      0xffffffff      //!< Invalid dword ID (counterpart of null pointers)
#ifdef USE_HANDLE_MANAGER
        #define INVALID_KID                     0xffffffff      //!< Invalid Kernel ID
#else
        #define INVALID_KID                     0xffff          //!< Invalid Kernel ID
#endif
        #define INVALID_NUMBER          0xDEADBEEF      //!< Standard junk value

        // Define BOOL if needed
        #ifndef BOOL
        typedef int     BOOL;                                           
        #endif

        typedef union {
                float   f;                                                      
                sdword  d;                                                      
        }scell;

        typedef union {
                float   f;                                                      
                udword  d;                                                      
        }ucell;

        // Type ranges
        #define MAX_SBYTE                               0x7f                                            //!< max possible sbyte value
        #define MIN_SBYTE                               0x80                                            //!< min possible sbyte value
        #define MAX_UBYTE                               0xff                                            //!< max possible ubyte value
        #define MIN_UBYTE                               0x00                                            //!< min possible ubyte value
        #define MAX_SWORD                               0x7fff                                          //!< max possible sword value
        #define MIN_SWORD                               0x8000                                          //!< min possible sword value
        #define MAX_UWORD                               0xffff                                          //!< max possible uword value
        #define MIN_UWORD                               0x0000                                          //!< min possible uword value
        #define MAX_SDWORD                              0x7fffffff                                      //!< max possible sdword value
        #define MIN_SDWORD                              0x80000000                                      //!< min possible sdword value
        #define MAX_UDWORD                              0xffffffff                                      //!< max possible udword value
        #define MIN_UDWORD                              0x00000000                                      //!< min possible udword value
        #define MAX_FLOAT                               FLT_MAX                                         //!< max possible float value
        #define MIN_FLOAT                               (-FLT_MAX)                                      //!< min possible loat value
        #define IEEE_1_0                                0x3f800000                                      //!< integer representation of 1.0
        #define IEEE_255_0                              0x437f0000                                      //!< integer representation of 255.0
        #define IEEE_MAX_FLOAT                  0x7f7fffff                                      //!< integer representation of MAX_FLOAT
        #define IEEE_MIN_FLOAT                  0xff7fffff                                      //!< integer representation of MIN_FLOAT
        #define IEEE_UNDERFLOW_LIMIT    0x1a000000

        #define ONE_OVER_RAND_MAX               (1.0f / float(RAND_MAX))        //!< Inverse of the max possible value returned by rand()

        typedef int                                     (__stdcall* PROC)();                    
        typedef bool                            (*ENUMERATION)(udword value, udword param, udword context);     
        typedef void**                          VTABLE;                                                 

        #undef          MIN
        #undef          MAX
        #define         MIN(a, b)       ((a) < (b) ? (a) : (b))                 //!< Returns the min value between a and b
        #define         MAX(a, b)       ((a) > (b) ? (a) : (b))                 //!< Returns the max value between a and b
        #define         MAXMAX(a,b,c)   ((a) > (b) ? MAX (a,c) : MAX (b,c))     //!<    Returns the max value between a, b and c

        template<class T>       inline_ const T&        TMin    (const T& a, const T& b)        { return b < a ? b : a; }
        template<class T>       inline_ const T&        TMax    (const T& a, const T& b)        { return a < b ? b : a; }
        template<class T>       inline_ void            TSetMin (T& a, const T& b)                      { if(a>b)       a = b;          }
        template<class T>       inline_ void            TSetMax (T& a, const T& b)                      { if(a<b)       a = b;          }

        #define         SQR(x)                  ((x)*(x))                                               //!< Returns x square
        #define         CUBE(x)                 ((x)*(x)*(x))                                   //!< Returns x cube

        #define         AND             &                                                                               //!< ...
        #define         OR              |                                                                               //!< ...
        #define         XOR             ^                                                                               //!< ...

        #define         QUADRAT(x)              ((x)*(x))                                               //!< Returns x square

#ifdef _WIN32
#   define srand48(x) srand((unsigned int) (x))
#       define srandom(x) srand((unsigned int) (x))
#       define random()   ((double) rand())
#   define drand48()  ((double) (((double) rand()) / ((double) RAND_MAX)))
#endif

#endif // __ICETYPES_H__