perf_event_open.2: srcfix

[thirdparty/man-pages.git] / man3 / strcmp.3

.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\"
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.\" References consulted:
.\"     Linux libc source code
.\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\"     386BSD man pages
.\" Modified Sat Jul 24 18:08:52 1993 by Rik Faith (faith@cs.unc.edu)
.\" Modified 2001-08-31, aeb
.\"
.TH STRCMP 3  2015-08-08 "" "Linux Programmer's Manual"
.SH NAME
strcmp, strncmp \- compare two strings
.SH SYNOPSIS
.nf
.B #include <string.h>
.sp
.BI "int strcmp(const char *" s1 ", const char *" s2 );
.sp
.BI "int strncmp(const char *" s1 ", const char *" s2 ", size_t " n );
.fi
.SH DESCRIPTION
The
.BR strcmp ()
function compares the two strings
.I s1
and
.IR s2 .
It returns an integer less than, equal to, or greater
than zero if
.I s1
is found, respectively, to be less than,
to match, or be greater than
.IR s2 .
.PP
The
.BR strncmp ()
function is similar, except it compares
only the first (at most)
.IR n
bytes of
.I s1
and
.IR s2 .
.SH RETURN VALUE
The
.BR strcmp ()
and
.BR strncmp ()
functions return an integer
less than, equal to, or greater than zero if
.I s1
(or the first
.I n
bytes thereof) is found, respectively, to be less than, to
match, or be greater than
.IR s2 .
.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lbw19 lb lb
l l l.
Interface	Attribute	Value
T{
.BR strcmp (),
.BR strncmp ()
T}	Thread safety	MT-Safe
.TE
.SH CONFORMING TO
POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD.
.SH SEE ALSO
.BR bcmp (3),
.BR memcmp (3),
.BR strcasecmp (3),
.BR strcoll (3),
.BR string (3),
.BR strncasecmp (3),
.BR strverscmp (3),
.BR wcscmp (3),
.BR wcsncmp (3)