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4.153 pgmspace.h
4.153.72 char * strstr_PF
char * strstr_PF(const char *s1, uint_farptr_t s2)

AVRLibc

4.153.72 char * strstr_PF

char * strstr_PF(const char *s1, uint_farptr_t s2)

The strstr_PF() function finds the first occurrence of the substring s2 in the string s1. The terminating '\0' characters are not compared. The strstr_PF() function is similar to strstr() except that s2 is a far pointer to a string in program space.

Remember:

The strstr_PF() function returns a pointer to the beginning of the substring, or NULL if the substring is not found. If s2 points to a string of zero length, the function returns s1. The contents of RAMPZ SFR are undefined when the function returns.

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