1.\" $NetBSD: wmemchr.3,v 1.4 2001/01/02 11:26:23 itojun Exp $ 2.\" 3.\" Copyright (c) 1990, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" This code is derived from software contributed to Berkeley by 7.\" Chris Torek and the American National Standards Committee X3, 8.\" on Information Processing Systems. 9.\" 10.\" Redistribution and use in source and binary forms, with or without 11.\" modification, are permitted provided that the following conditions 12.\" are met: 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 2. Redistributions in binary form must reproduce the above copyright 16.\" notice, this list of conditions and the following disclaimer in the 17.\" documentation and/or other materials provided with the distribution. 18.\" 3. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" from: @(#)strcpy.3 8.1 (Berkeley) 6/4/93 35.\" 36.Dd July 14, 2021 37.Dt WMEMCHR 3 38.Os 39.Sh NAME 40.Nm wmemchr , 41.Nm wmemcmp , 42.Nm wmemcpy , 43.Nm wmemmove , 44.Nm wmempcpy , 45.Nm wmemset , 46.Nm wcpcpy , 47.Nm wcpncpy , 48.Nm wcscasecmp , 49.Nm wcscat , 50.Nm wcschr , 51.Nm wcscmp , 52.Nm wcscpy , 53.Nm wcscspn , 54.Nm wcsdup , 55.Nm wcslcat , 56.Nm wcslcpy , 57.Nm wcslen , 58.Nm wcsncasecmp , 59.Nm wcsncat , 60.Nm wcsncmp , 61.Nm wcsncpy , 62.Nm wcsnlen , 63.Nm wcspbrk , 64.Nm wcsrchr , 65.Nm wcsspn , 66.Nm wcsstr 67.Nd wide character string manipulation operations 68.Sh LIBRARY 69.Lb libc 70.Sh SYNOPSIS 71.In wchar.h 72.Ft wchar_t * 73.Fn wmemchr "const wchar_t *s" "wchar_t c" "size_t n" 74.Ft int 75.Fn wmemcmp "const wchar_t *s1" "const wchar_t *s2" "size_t n" 76.Ft wchar_t * 77.Fn wmemcpy "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n" 78.Ft wchar_t * 79.Fn wmemmove "wchar_t *s1" "const wchar_t *s2" "size_t n" 80.Ft wchar_t * 81.Fn wmempcpy "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n" 82.Ft wchar_t * 83.Fn wmemset "wchar_t *s" "wchar_t c" "size_t n" 84.Ft wchar_t * 85.Fn wcpcpy "wchar_t *s1" "wchar_t *s2" 86.Ft wchar_t * 87.Fn wcpncpy "wchar_t *s1" "wchar_t *s2" "size_t n" 88.Ft int 89.Fn wcscasecmp "const wchar_t *s1" "const wchar_t *s2" 90.Ft wchar_t * 91.Fn wcscat "wchar_t * restrict s1" "const wchar_t * restrict s2" 92.Ft wchar_t * 93.Fn wcschr "const wchar_t *s" "wchar_t c" 94.Ft int 95.Fn wcscmp "const wchar_t *s1" "const wchar_t *s2" 96.Ft wchar_t * 97.Fn wcscpy "wchar_t * restrict s1" "const wchar_t * restrict s2" 98.Ft size_t 99.Fn wcscspn "const wchar_t *s1" "const wchar_t *s2" 100.Ft wchar_t * 101.Fn wcsdup "const wchar_t *s" 102.Ft size_t 103.Fn wcslcat "wchar_t *s1" "const wchar_t *s2" "size_t n" 104.Ft size_t 105.Fn wcslcpy "wchar_t *s1" "const wchar_t *s2" "size_t n" 106.Ft size_t 107.Fn wcslen "const wchar_t *s" 108.Ft int 109.Fn wcsncasecmp "const wchar_t *s1" "const wchar_t *s2" "size_t n" 110.Ft wchar_t * 111.Fn wcsncat "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n" 112.Ft int 113.Fn wcsncmp "const wchar_t *s1" "const wchar_t * s2" "size_t n" 114.Ft wchar_t * 115.Fn wcsncpy "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n" 116.Ft size_t 117.Fn wcsnlen "const wchar_t *s" "size_t maxlen" 118.Ft wchar_t * 119.Fn wcspbrk "const wchar_t *s1" "const wchar_t *s2" 120.Ft wchar_t * 121.Fn wcsrchr "const wchar_t *s" "wchar_t c" 122.Ft size_t 123.Fn wcsspn "const wchar_t *s1" "const wchar_t *s2" 124.Ft wchar_t * 125.Fn wcsstr "const wchar_t * restrict s1" "const wchar_t * restrict s2" 126.Sh DESCRIPTION 127The functions implement string manipulation operations over wide character 128strings. 129For a detailed description, refer to documents for the respective single-byte 130counterpart, such as 131.Xr memchr 3 . 132.Sh SEE ALSO 133.Xr memchr 3 , 134.Xr memcmp 3 , 135.Xr memcpy 3 , 136.Xr memmove 3 , 137.Xr memset 3 , 138.Xr stpcpy 3 , 139.Xr stpncpy 3 , 140.Xr strcasecmp 3 , 141.Xr strcat 3 , 142.Xr strchr 3 , 143.Xr strcmp 3 , 144.Xr strcpy 3 , 145.Xr strcspn 3 , 146.Xr strdup 3 , 147.Xr strlcat 3 , 148.Xr strlcpy 3 , 149.Xr strlen 3 , 150.Xr strncat 3 , 151.Xr strncmp 3 , 152.Xr strncpy 3 , 153.Xr strnlen 3 , 154.Xr strpbrk 3 , 155.Xr strrchr 3 , 156.Xr strspn 3 , 157.Xr strstr 3 158.Sh STANDARDS 159These functions conform to 160.St -isoC-99 , 161with the exception of 162.Fn wcpcpy , 163.Fn wcpncpy , 164.Fn wcscasecmp , 165.Fn wcsdup , 166.Fn wcsncasecmp , 167and 168.Fn wcsnlen , 169which conform to 170.St -p1003.1-2008 ; 171and 172.Fn wcslcat , 173.Fn wcslcpy , 174and 175.Fn wmempcpy , 176which are extensions. 177