STRCASECMP(3) manual page
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strcasecmp, strncasecmp - compare two strings
ignoring case
#include <strings.h>
int strcasecmp(const char *s1, const char *s2);
int strncasecmp(const char *s1, const char *s2, size_t n);
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.
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.
4.4BSD, POSIX.1-2001.
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.
bcmp(3)
, memcmp(3)
, strcmp(3)
, strcoll(3)
, string(3)
, strncmp(3)
,
wcscasecmp(3)
, wcsncasecmp(3)
This page is part of release 3.78
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/.
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