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[/] [or1k/] [tags/] [tn_m001/] [gdb-5.0/] [libiberty/] [strstr.c] - Rev 1776
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/* Simple implementation of strstr for systems without it. This function is in the public domain. */ /* NAME strstr -- locate first occurance of a substring SYNOPSIS #include <string.h> char *strstr (char *s1, char *s2) DESCRIPTION Locates the first occurance in the string pointed to by S1 of the string pointed to by S2. Returns a pointer to the substring found, or a NULL pointer if not found. If S2 points to a string with zero length, the function returns S1. BUGS */ /* FIXME: The above description is ANSI compiliant. This routine has not been validated to comply with it. -fnf */ char * strstr (s1, s2) char *s1, *s2; { register char *p = s1; extern char *strchr (); extern int strncmp (); #if __GNUC__==2 extern __SIZE_TYPE__ strlen (); #endif register int len = strlen (s2); for (; (p = strchr (p, *s2)) != 0; p++) { if (strncmp (p, s2, len) == 0) { return (p); } } return (0); }
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