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'\" t
.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\"
.\" SPDX-License-Identifier: Linux-man-pages-copyleft
.\"
.\" References consulted:
.\" Linux libc source code
.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\" 386BSD man pages
.\" Modified Sun Jul 25 10:40:44 1993 by Rik Faith (faith@cs.unc.edu)
.TH strcoll 3 2023-10-31 "Linux man-pages 6.7"
.SH NAME
strcoll \- compare two strings using the current locale
.SH LIBRARY
Standard C library
.RI ( libc ", " \-lc )
.SH SYNOPSIS
.nf
.B #include <string.h>
.P
.BI "int strcoll(const char *" s1 ", const char *" s2 );
.fi
.SH DESCRIPTION
The
.BR strcoll ()
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 .
The comparison is based on
strings interpreted as appropriate for the program's current locale
for category
.BR LC_COLLATE .
(See
.BR setlocale (3).)
.SH RETURN VALUE
The
.BR strcoll ()
function 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 ,
when both are interpreted
as appropriate for the current locale.
.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lbx lb lb
l l l.
Interface Attribute Value
T{
.na
.nh
.BR strcoll ()
T} Thread safety MT-Safe locale
.TE
.SH STANDARDS
C11, POSIX.1-2008.
.SH HISTORY
POSIX.1-2001, C89, SVr4, 4.3BSD.
.SH NOTES
In the
.I "POSIX"
or
.I "C"
locales
.BR strcoll ()
is equivalent to
.BR strcmp (3).
.SH SEE ALSO
.BR memcmp (3),
.BR setlocale (3),
.BR strcasecmp (3),
.BR strcmp (3),
.BR string (3),
.BR strxfrm (3)
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