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Marked memcmp/strcmp as "pure" functions, to allow gcc to optimise

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away code such as

  if ( strcmp ( some_string, "some_value" ) != 0 ) {
     DBG ( "Bad value received!" );
  }
This commit is contained in:
Michael Brown
2006-11-27 23:50:24 +00:00
parent c4677c7e73
commit 82342e0b8f
1 changed files with 5 additions and 3 deletions
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8
src/include/string.h
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@@ -47,8 +47,9 @@ char * strcpy(char * dest,const char *src);
char * strncpy(char * dest,const char *src,size_t count);
char * strcat(char * dest, const char * src);
char * strncat(char *dest, const char *src, size_t count);
int strcmp(const char * cs,const char * ct);
int strncmp(const char * cs,const char * ct,size_t count);
int __attribute__ (( pure )) strcmp(const char * cs,const char * ct);
int __attribute__ (( pure )) strncmp(const char * cs,const char * ct,
size_t count);
char * strchr(const char * s, int c);
char * strrchr(const char * s, int c);
size_t strlen(const char * s);
@@ -60,7 +61,8 @@ char * strsep(char **s, const char *ct);
void * memset(void * s,int c,size_t count);
char * bcopy(const char * src, char * dest, int count);
void * memmove(void * dest,const void *src,size_t count);
int memcmp(const void * cs,const void * ct,size_t count);
int __attribute__ (( pure )) memcmp(const void * cs,const void * ct,
size_t count);
void * memscan(void * addr, int c, size_t size);
char * strstr(const char * s1,const char * s2);
void * memchr(const void *s, int c, size_t n);