strcmp(3) [xfree86 man page]

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

NAME

       strcmp, strncmp - compare two strings

SYNOPSIS

       #include <string.h>

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

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

DESCRIPTION

       The  strcmp() function compares the two strings s1 and s2.  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 strncmp() function is similar, except it compares only the first (at most) n bytes of s1 and s2.

RETURN VALUE

       The strcmp() and strncmp() 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.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +--------------------+---------------+---------+
       |Interface           | Attribute     | Value   |
       +--------------------+---------------+---------+
       |strcmp(), strncmp() | Thread safety | MT-Safe |
       +--------------------+---------------+---------+
CONFORMING TO

       POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD.

SEE ALSO

       bcmp(3), memcmp(3), strcasecmp(3), strcoll(3), string(3), strncasecmp(3), strverscmp(3), wcscmp(3), wcsncmp(3)

COLOPHON

       This  page is part of release 4.15 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 https://www.kernel.org/doc/man-pages/.

                                                                    2015-08-08                                                           STRCMP(3)

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 performs a byte-by-byte comparison of the 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 that it compares no more than n bytes of s1 and s2.

RETURN VALUE

       The strcasecmp() and strncasecmp() functions return an integer less than, equal to, or greater than zero if s1  is,  after  ignoring  case,
       found to be less than, to match, or be greater than s2, respectively.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +----------------------------+---------------+----------------+
       |Interface		    | Attribute     | Value	     |
       +----------------------------+---------------+----------------+
       |strcasecmp(), strncasecmp() | Thread safety | MT-Safe locale |
       +----------------------------+---------------+----------------+
CONFORMING TO

       4.4BSD, POSIX.1-2001, POSIX.1-2008.

NOTES

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

       The POSIX.1-2008 standard says of these functions:

	      When  the  LC_CTYPE  category  of the locale being used is from the POSIX locale, these functions shall behave as if the strings had
	      been converted to lowercase and then a byte comparison performed.  Otherwise, the results are unspecified.

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 4.15 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 https://www.kernel.org/doc/man-pages/.

								    2017-09-15							     STRCASECMP(3)