types.h

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#ifndef OPENSNES_TYPES_H
#define OPENSNES_TYPES_H
 
/*============================================================================
 * Fixed-Width Integer Types
 *============================================================================*/
 
typedef signed char s8;
 
typedef unsigned char u8;
 
typedef signed short s16;
 
typedef unsigned short u16;
 
typedef signed int s32;
 
typedef unsigned int u32;
 
 
/*============================================================================
 * Volatile Types
 *============================================================================*/
 
typedef volatile u8 vu8;
typedef volatile u16 vu16;
typedef volatile u32 vu32;
typedef volatile s8 vs8;
typedef volatile s16 vs16;
typedef volatile s32 vs32;
 
/*============================================================================
 * Boolean Type
 *============================================================================*/
 
/*
 * Bool type compatibility:
 * - C11 compilers (cproc) have built-in bool/_Bool
 * - Legacy compilers (816-tcc) need typedef
 * We check for __STDC_VERSION__ >= C99 as indicator of modern compiler
 */
#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L
typedef unsigned char bool;
#define false 0
#define true  1
#endif
 
/* SNES-specific TRUE/FALSE (0xFF for TRUE is common in SNES code) */
#define FALSE 0
#define TRUE  0xFF
 
/*============================================================================
 * Common Macros
 *============================================================================*/
 
#ifndef NULL
#define NULL ((void*)0)
#endif
 
#define BIT(n) (1 << (n))
 
#define LO_BYTE(x) ((u8)((x) & 0xFF))
 
#define HI_BYTE(x) ((u8)(((x) >> 8) & 0xFF))
 
#define MAKE_WORD(lo, hi) ((u16)(((u8)(hi) << 8) | (u8)(lo)))
 
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
 
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
 
#define CLAMP(x, lo, hi) (((x) < (lo)) ? (lo) : (((x) > (hi)) ? (hi) : (x)))
 
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 
/*============================================================================
 * Function Pointer Types
 *============================================================================*/
 
typedef void (*VoidFn)(void);
 
#endif /* OPENSNES_TYPES_H */