1*2fe8fb19SBen Gras.\" Copyright (c) 1990, 1991, 1993 2*2fe8fb19SBen Gras.\" The Regents of the University of California. All rights reserved. 3*2fe8fb19SBen Gras.\" 4*2fe8fb19SBen Gras.\" This code is derived from software contributed to Berkeley by 5*2fe8fb19SBen Gras.\" Chris Torek and the American National Standards Committee X3, 6*2fe8fb19SBen Gras.\" on Information Processing Systems. 7*2fe8fb19SBen Gras.\" 8*2fe8fb19SBen Gras.\" Redistribution and use in source and binary forms, with or without 9*2fe8fb19SBen Gras.\" modification, are permitted provided that the following conditions 10*2fe8fb19SBen Gras.\" are met: 11*2fe8fb19SBen Gras.\" 1. Redistributions of source code must retain the above copyright 12*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer. 13*2fe8fb19SBen Gras.\" 2. Redistributions in binary form must reproduce the above copyright 14*2fe8fb19SBen Gras.\" notice, this list of conditions and the following disclaimer in the 15*2fe8fb19SBen Gras.\" documentation and/or other materials provided with the distribution. 16*2fe8fb19SBen Gras.\" 3. Neither the name of the University nor the names of its contributors 17*2fe8fb19SBen Gras.\" may be used to endorse or promote products derived from this software 18*2fe8fb19SBen Gras.\" without specific prior written permission. 19*2fe8fb19SBen Gras.\" 20*2fe8fb19SBen Gras.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21*2fe8fb19SBen Gras.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22*2fe8fb19SBen Gras.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23*2fe8fb19SBen Gras.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24*2fe8fb19SBen Gras.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25*2fe8fb19SBen Gras.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26*2fe8fb19SBen Gras.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27*2fe8fb19SBen Gras.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28*2fe8fb19SBen Gras.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29*2fe8fb19SBen Gras.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30*2fe8fb19SBen Gras.\" SUCH DAMAGE. 31*2fe8fb19SBen Gras.\" 32*2fe8fb19SBen Gras.\" from: @(#)strcmp.3 8.1 (Berkeley) 6/4/93 33*2fe8fb19SBen Gras.\" $NetBSD: strcmp.3,v 1.13 2006/10/16 08:48:45 wiz Exp $ 34*2fe8fb19SBen Gras.\" 35*2fe8fb19SBen Gras.Dd June 4, 1993 36*2fe8fb19SBen Gras.Dt STRCMP 3 37*2fe8fb19SBen Gras.Os 38*2fe8fb19SBen Gras.Sh NAME 39*2fe8fb19SBen Gras.Nm strcmp , 40*2fe8fb19SBen Gras.Nm strncmp 41*2fe8fb19SBen Gras.Nd compare strings 42*2fe8fb19SBen Gras.Sh LIBRARY 43*2fe8fb19SBen Gras.Lb libc 44*2fe8fb19SBen Gras.Sh SYNOPSIS 45*2fe8fb19SBen Gras.In string.h 46*2fe8fb19SBen Gras.Ft int 47*2fe8fb19SBen Gras.Fn strcmp "const char *s1" "const char *s2" 48*2fe8fb19SBen Gras.Ft int 49*2fe8fb19SBen Gras.Fn strncmp "const char *s1" "const char *s2" "size_t len" 50*2fe8fb19SBen Gras.Sh DESCRIPTION 51*2fe8fb19SBen GrasThe 52*2fe8fb19SBen Gras.Fn strcmp 53*2fe8fb19SBen Grasand 54*2fe8fb19SBen Gras.Fn strncmp 55*2fe8fb19SBen Grasfunctions 56*2fe8fb19SBen Graslexicographically compare the nul-terminated strings 57*2fe8fb19SBen Gras.Fa s1 58*2fe8fb19SBen Grasand 59*2fe8fb19SBen Gras.Fa s2 . 60*2fe8fb19SBen Gras.Sh RETURN VALUES 61*2fe8fb19SBen GrasThe 62*2fe8fb19SBen Gras.Fn strcmp 63*2fe8fb19SBen Grasand 64*2fe8fb19SBen Gras.Fn strncmp 65*2fe8fb19SBen Grasreturn an integer greater than, equal to, or less than 0, according 66*2fe8fb19SBen Grasto whether the string 67*2fe8fb19SBen Gras.Fa s1 68*2fe8fb19SBen Grasis greater than, equal to, or less than the string 69*2fe8fb19SBen Gras.Fa s2 . 70*2fe8fb19SBen GrasThe comparison is done using unsigned characters, so that 71*2fe8fb19SBen Gras.Ql \e200 72*2fe8fb19SBen Grasis greater than 73*2fe8fb19SBen Gras.Ql \e0 . 74*2fe8fb19SBen Gras.Pp 75*2fe8fb19SBen GrasThe 76*2fe8fb19SBen Gras.Fn strncmp 77*2fe8fb19SBen Grascompares not more than 78*2fe8fb19SBen Gras.Fa len 79*2fe8fb19SBen Grascharacters. 80*2fe8fb19SBen Gras.Sh SEE ALSO 81*2fe8fb19SBen Gras.Xr bcmp 3 , 82*2fe8fb19SBen Gras.Xr memcmp 3 , 83*2fe8fb19SBen Gras.Xr strcasecmp 3 , 84*2fe8fb19SBen Gras.Xr strcoll 3 , 85*2fe8fb19SBen Gras.Xr strxfrm 3 86*2fe8fb19SBen Gras.Sh STANDARDS 87*2fe8fb19SBen GrasThe 88*2fe8fb19SBen Gras.Fn strcmp 89*2fe8fb19SBen Grasand 90*2fe8fb19SBen Gras.Fn strncmp 91*2fe8fb19SBen Grasfunctions 92*2fe8fb19SBen Grasconform to 93*2fe8fb19SBen Gras.St -ansiC . 94*2fe8fb19SBen Gras.Sh NOTES 95*2fe8fb19SBen GrasIf 96*2fe8fb19SBen Gras.Fa len 97*2fe8fb19SBen Grasis zero 98*2fe8fb19SBen Gras.Fn strncmp 99*2fe8fb19SBen Grasreturns always 0. 100