project64/Source/RSP/Types.h

#ifndef __Types_h
#define __Types_h

#include <stdint.h>

// Pointer to RSP operation code functions or "func"
// This is the type of all RSP interpreter and recompiler functions

typedef void(*p_func)(void);

// TODO: Rewrite/remove/address?
/*
`BOOL` is Windows-specific so is going to tend to be avoided.
`int` is the exact replacement.

However, saying "int" all the time for true/false is a little ambiguous.

Maybe in the future, with C++ (or C99) rewrites, we can switch to `bool`.
Until then, a simple type definition will help emphasize true/false logic.
*/

typedef int Boolean;
#if !defined(FALSE) && !defined(TRUE)
#define FALSE           0
#define TRUE            1
#endif

typedef union tagUWORD {
    int32_t     W;
    uint32_t    UW;
    int16_t     HW[2];
    uint16_t    UHW[2];
    int8_t      B[4];
    uint8_t     UB[4];

    float       F;
} UWORD32;

typedef union tagUDWORD {
    int64_t     DW;
    uint64_t    UDW;
    int32_t     W[2];
    uint32_t    UW[2];
    int16_t     HW[4];
    uint16_t    UHW[4];
    int8_t      B[8];
    uint8_t     UB[8];

    double      D;
    float       F[2];
} UDWORD;

typedef union tagVect {
    int64_t     DW[2];
    uint64_t    UDW[2];
    int32_t     W[4];
    uint32_t    UW[4];
    int16_t     HW[8];
    uint16_t    UHW[8];
    int8_t      B[16];
    uint8_t     UB[16];

    double      FD[2];
    float       FS[4];
} VECTOR;

#endif