NAME

       strcasecmp, strncasecmp - case-insensitive string comparisons

SYNOPSIS

       #include <strings.h>

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

DESCRIPTION

       The  strcasecmp() function shall compare, while ignoring differences in case, the string pointed to by s1
       to the string pointed to by s2. The strncasecmp() function shall compare, while ignoring  differences  in
       case, not more than n bytes from the string pointed to by s1 to the string pointed to by s2.

       In  the POSIX locale, strcasecmp() and strncasecmp() shall behave as if the strings had been converted to
       lowercase and then a byte comparison performed. The results are unspecified in other locales.

RETURN VALUE

       Upon completion, strcasecmp() shall return an integer greater than, equal to, or  less  than  0,  if  the
       string  pointed to by s1 is, ignoring case, greater than, equal to, or less than the string pointed to by
       s2, respectively.

       Upon successful completion, strncasecmp() shall return an integer greater than, equal to, or less than 0,
       if the possibly null-terminated array pointed to by s1 is, ignoring case, greater than, equal to, or less
       than the possibly null-terminated array pointed to by s2, respectively.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       The Base Definitions volume of IEEE Std 1003.1-2001, <strings.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition,
       Standard  for  Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers,
       Inc  and  The  Open Group. In the event of any discrepancy between this version and the original IEEE and
       The Open Group Standard, the original IEEE and The Open Group  Standard  is  the  referee  document.  The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .