?? string.h
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#ifndef __ASM_ARM_STRING_H#define __ASM_ARM_STRING_H/* * We don't do inline string functions, since the * optimised inline asm versions are not small. */#define __HAVE_ARCH_STRRCHRextern char * strrchr(const char * s, int c);#define __HAVE_ARCH_STRCHRextern char * strchr(const char * s, int c);#define __HAVE_ARCH_MEMCPYextern void * memcpy(void *, const void *, __kernel_size_t);#define __HAVE_ARCH_MEMMOVEextern void * memmove(void *, const void *, __kernel_size_t);#define __HAVE_ARCH_MEMCHRextern void * memchr(const void *, int, __kernel_size_t);#define __HAVE_ARCH_MEMZERO#define __HAVE_ARCH_MEMSETextern void * memset(void *, int, __kernel_size_t);extern void __memzero(void *ptr, __kernel_size_t n);#define memset(p,v,n) \ ({ \ if ((n) != 0) { \ if (__builtin_constant_p((v)) && (v) == 0) \ __memzero((p),(n)); \ else \ memset((p),(v),(n)); \ } \ (p); \ })#define memzero(p,n) ({ if ((n) != 0) __memzero((p),(n)); (p); })#endif?? 快捷鍵說明
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