1.\" Copyright (c) 2012 Ed Schouten <ed@FreeBSD.org> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd January 1, 2012 28.Dt MEMCCHR 9 29.Os 30.Sh NAME 31.Nm memcchr 32.Nd locate the complement of a byte in byte string 33.Sh SYNOPSIS 34.In sys/libkern.h 35.Ft void * 36.Fn memcchr "const void *b" "int c" "size_t len" 37.Sh DESCRIPTION 38The 39.Fn memcchr 40function locates the first occurrence of a byte unequal to 41.Fa c 42(converted to an 43.Vt "unsigned char" ) 44in string 45.Fa b . 46.Sh RETURN VALUES 47The 48.Fn memcchr 49function returns a pointer to the byte located, or NULL if no such byte 50exists within 51.Fa len 52bytes. 53.Sh SEE ALSO 54.Xr memchr 3 55.Sh HISTORY 56The 57.Fn memcchr 58function first appeared in 59.Fx 10.0 . 60