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 .