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277 extern DECLSPEC void *SDLCALL SDL_memset(void *dst, int c, size_t len); |
277 extern DECLSPEC void *SDLCALL SDL_memset(void *dst, int c, size_t len); |
278 #endif |
278 #endif |
279 #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x))) |
279 #define SDL_zero(x) SDL_memset(&(x), 0, sizeof((x))) |
280 #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x))) |
280 #define SDL_zerop(x) SDL_memset((x), 0, sizeof(*(x))) |
281 |
281 |
282 /* We can count on memset existing on Mac OS X and being well-tuned. */ |
282 #if defined(__GNUC__) && defined(i386) |
283 #if defined(__MACH__) && defined(__APPLE__) |
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284 #define SDL_memset4(dst, val, len) memset(dst, val, (len)*4) |
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285 #elif defined(__GNUC__) && defined(i386) |
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286 #define SDL_memset4(dst, val, len) \ |
283 #define SDL_memset4(dst, val, len) \ |
287 do { \ |
284 do { \ |
288 int u0, u1, u2; \ |
285 int u0, u1, u2; \ |
289 __asm__ __volatile__ ( \ |
286 __asm__ __volatile__ ( \ |
290 "cld\n\t" \ |
287 "cld\n\t" \ |