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STRCASECMP(3)                       Linux Programmer's Manual                       STRCASECMP(3)



NAME
       strcasecmp, strncasecmp - compare two strings ignoring case

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  compares  the two strings s1 and s2, ignoring the case of the
       characters.  It returns an integer less than, equal to, or greater  than  zero  if  s1  is
       found, respectively, to be less than, to match, or be greater than s2.

       The strncasecmp() function is similar, except it compares the only first n bytes of s1.

RETURN VALUE
       The  strcasecmp()  and  strncasecmp()  functions return an integer less than, equal to, or
       greater than zero if s1 (or the first n bytes thereof) is found, respectively, to be  less
       than, to match, or be greater than s2.

CONFORMING TO
       4.4BSD, POSIX.1-2001.

NOTES
       The  strcasecmp()  and  strncasecmp()  functions first appeared in 4.4BSD, where they were
       declared in  <string.h>.   Thus,  for  reasons  of  historical  compatibility,  the  glibc
       <string.h> header file also declares these functions, if the _DEFAULT_SOURCE (or, in glibc
       2.19 and earlier, _BSD_SOURCE) feature test macro is defined.

SEE ALSO
       bcmp(3),  memcmp(3),  strcmp(3),   strcoll(3),   string(3),   strncmp(3),   wcscasecmp(3),
       wcsncasecmp(3)

COLOPHON
       This  page  is  part of release 3.74 of the Linux man-pages project.  A description of the
       project, information about reporting bugs, and the latest version of  this  page,  can  be
       found at http://www.kernel.org/doc/man-pages/.



                                            2014-05-10                              STRCASECMP(3)


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