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strcasecmp(3)

NAME

     strcasecmp, strncasecmp -- compare strings, ignoring case


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <strings.h>

     int
     strcasecmp(const char *s1, const char *s2);

     int
     strncasecmp(const char *s1, const char *s2, size_t len);


DESCRIPTION

     The strcasecmp() and strncasecmp() functions compare the null-terminated
     strings s1 and s2.

     The strncasecmp() compares at most len characters.


RETURN VALUES

     The strcasecmp() and strncasecmp() return an integer greater than, equal
     to, or less than 0, according as s1 is lexicographically greater than,
     equal to, or less than s2 after translation of each corresponding charac-
     ter to lower-case.  The strings themselves are not modified.  The compar-
     ison is done using unsigned characters, so that `\200' is greater than
     `\0'.


SEE ALSO

     bcmp(3), memcmp(3), strcmp(3), strcoll(3), strxfrm(3), tolower(3)


HISTORY

     The strcasecmp() and strncasecmp() functions first appeared in 4.4BSD.
     Their prototypes existed previously in <string.h> before they were moved
     to <strings.h> for IEEE Std 1003.1-2001 (``POSIX.1'') compliance.

FreeBSD 5.4			 June 9, 1993			   FreeBSD 5.4

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