STRCASECMP(3) BSD Library Functions Manual STRCASECMP(3)

NAME
     ssttrrccaasseeccmmpp, ssttrrnnccaasseeccmmpp, ssttrrccaasseeccmmppll, ssttrrnnccaasseeccmmppll - compare strings,
     ignoring case

LLIIBBRRAARRYY
     Standard C Library (libc, -lc)

SYNOPSIS
     ##iinncclluuddee <>

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

     int
     ssttrrnnccaasseeccmmpp(const char *s1, const char *s2, sizet len);

     ##iinncclluuddee <>

     int
     ssttrrccaasseeccmmppll(const char *s1, const char *s2, localet loc);

     int
     ssttrrnnccaasseeccmmppll(const char *s1, const char *s2, sizet len, localet loc);

DESCRIPTION
     The ssttrrccaasseeccmmpp() and ssttrrnnccaasseeccmmpp() functions compare the null-terminated
     strings s1 and s2.

     The ssttrrnnccaasseeccmmpp() compares at most len characters.

     While the ssttrrccaasseeccmmpp() and ssttrrnnccaasseeccmmpp() functions use the current
     locale, the ssttrrccaasseeccmmppll() and ssttrrnnccaasseeccmmppll() functions may be passed
     locales directly. See xlocale(3) for more information.

RETURN VALUES
     The ssttrrccaasseeccmmpp() and ssttrrnnccaasseeccmmpp() 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),
     xlocale(3)

HISTORY     The ssttrrccaasseeccmmpp() and ssttrrnnccaasseeccmmpp() functions first appeared in 4.4BSD.
     Their prototypes existed previously in  before they were moved
     to  for IEEE Std 1003.1-2001 (``POSIX.1'') compliance.

BSD                              June 9, 1993                              BSD