placeholder.h

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#ifndef PLACEHOLDER_H
#define PLACEHOLDER_H
 
#include <m2c_macros.h> // IWYU pragma: export

typedef void (*jmp_t)(void);

typedef jmp_t jtbl_t[];
 
#ifndef MWERKS_GEKKO
/* Reciprocal sqrt estimate; callers Newton-refine it as 1/sqrt. */
#define __frsqrte(x) (1.0 / sqrt(x))
#define sqrtf__Ff(x) sqrtf(x)
#define sqrtf_accurate(x) sqrtf(x)
#define __fabs(f) fabsf(f)
#endif
 
#ifndef UNK_T
#ifdef M2CTX
#define UNK_T M2C_UNK
#else
#define UNK_T void*
#endif
#endif
 
#define U32_TO_F32 4503599627370496.0
#define S32_TO_F32 4503601774854144.0
 
#define PAD_STACK(bytes)                                                      \
    do {                                                                      \
        UNUSED unsigned char _[(bytes)];                                      \
    } while (0)

#define FORCE_PAD_STACK(bytes)                                                \
    do {                                                                      \
        UNUSED unsigned char _[(bytes)] = { 0 };                              \
    } while (0)
 
#define FORCE_PAD_STACK_4                                                     \
    do {                                                                      \
        UNUSED u32 _0 = 0;                                                    \
    } while (0)
 
#define FORCE_PAD_STACK_8                                                     \
    do {                                                                      \
        UNUSED u64 _0 = 0;                                                    \
    } while (0)
 
#define FORCE_PAD_STACK_16                                                    \
    do {                                                                      \
        UNUSED u64 _0 = 0, _1 = 0;                                            \
    } while (0)
 
#define FORCE_PAD_STACK_32                                                    \
    do {                                                                      \
        UNUSED u64 _0 = 0, _1 = 0, _2 = 0, _3 = 0;                            \
    } while (0)
 
#endif