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.Dd March 21, 2024 35.Dt WMEMCHR 3 36.Os 37.Sh NAME 38.Nm wmemchr , 39.Nm wmemcmp , 40.Nm wmemcpy , 41.Nm wmemmove , 42.Nm wmempcpy , 43.Nm wmemset , 44.Nm wcpcpy , 45.Nm wcpncpy , 46.Nm wcscasecmp , 47.Nm wcscat , 48.Nm wcschr , 49.Nm wcscmp , 50.Nm wcscpy , 51.Nm wcscspn , 52.Nm wcsdup , 53.Nm wcslcat , 54.Nm wcslcpy , 55.Nm wcslen , 56.Nm wcsncasecmp , 57.Nm wcsncat , 58.Nm wcsncmp , 59.Nm wcsncpy , 60.Nm wcsnlen , 61.Nm wcspbrk , 62.Nm wcsrchr , 63.Nm wcsspn , 64.Nm wcsstr 65.Nd wide character string manipulation operations 66.Sh LIBRARY 67.Lb libc 68.Sh SYNOPSIS 69.In wchar.h 70.Ft wchar_t * 71.Fn wmemchr "const wchar_t *s" "wchar_t c" "size_t n" 72.Ft int 73.Fn wmemcmp "const wchar_t *s1" "const wchar_t *s2" "size_t n" 74.Ft wchar_t * 75.Fn wmemcpy "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n" 76.Ft wchar_t * 77.Fn wmemmove "wchar_t *s1" "const wchar_t *s2" "size_t n" 78.Ft wchar_t * 79.Fn wmempcpy "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n" 80.Ft wchar_t * 81.Fn wmemset "wchar_t *s" "wchar_t c" "size_t n" 82.Ft wchar_t * 83.Fn wcpcpy "wchar_t * restrict s1" "const wchar_t * restrict s2" 84.Ft wchar_t * 85.Fn wcpncpy "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n" 86.Ft int 87.Fn wcscasecmp "const wchar_t *s1" "const wchar_t *s2" 88.Ft wchar_t * 89.Fn wcscat "wchar_t * restrict s1" "const wchar_t * restrict s2" 90.Ft wchar_t * 91.Fn wcschr "const wchar_t *s" "wchar_t c" 92.Ft int 93.Fn wcscmp "const wchar_t *s1" "const wchar_t *s2" 94.Ft wchar_t * 95.Fn wcscpy "wchar_t * restrict s1" "const wchar_t * restrict s2" 96.Ft size_t 97.Fn wcscspn "const wchar_t *s1" "const wchar_t *s2" 98.Ft wchar_t * 99.Fn wcsdup "const wchar_t *s" 100.Ft size_t 101.Fn wcslcat "wchar_t *s1" "const wchar_t *s2" "size_t n" 102.Ft size_t 103.Fn wcslcpy "wchar_t *s1" "const wchar_t *s2" "size_t n" 104.Ft size_t 105.Fn wcslen "const wchar_t *s" 106.Ft int 107.Fn wcsncasecmp "const wchar_t *s1" "const wchar_t *s2" "size_t n" 108.Ft wchar_t * 109.Fn wcsncat "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n" 110.Ft int 111.Fn wcsncmp "const wchar_t *s1" "const wchar_t * s2" "size_t n" 112.Ft wchar_t * 113.Fn wcsncpy "wchar_t * restrict s1" "const wchar_t * restrict s2" "size_t n" 114.Ft size_t 115.Fn wcsnlen "const wchar_t *s" "size_t maxlen" 116.Ft wchar_t * 117.Fn wcspbrk "const wchar_t *s1" "const wchar_t *s2" 118.Ft wchar_t * 119.Fn wcsrchr "const wchar_t *s" "wchar_t c" 120.Ft size_t 121.Fn wcsspn "const wchar_t *s1" "const wchar_t *s2" 122.Ft wchar_t * 123.Fn wcsstr "const wchar_t * restrict s1" "const wchar_t * restrict s2" 124.Sh DESCRIPTION 125The functions implement string manipulation operations over wide character 126strings. 127For a detailed description, refer to documents for the respective single-byte 128counterpart, such as 129.Xr memchr 3 . 130.Sh SEE ALSO 131.Xr memchr 3 , 132.Xr memcmp 3 , 133.Xr memcpy 3 , 134.Xr memmove 3 , 135.Xr memset 3 , 136.Xr stpcpy 3 , 137.Xr stpncpy 3 , 138.Xr strcasecmp 3 , 139.Xr strcat 3 , 140.Xr strchr 3 , 141.Xr strcmp 3 , 142.Xr strcpy 3 , 143.Xr strcspn 3 , 144.Xr strdup 3 , 145.Xr strlcat 3 , 146.Xr strlcpy 3 , 147.Xr strlen 3 , 148.Xr strncat 3 , 149.Xr strncmp 3 , 150.Xr strncpy 3 , 151.Xr strnlen 3 , 152.Xr strpbrk 3 , 153.Xr strrchr 3 , 154.Xr strspn 3 , 155.Xr strstr 3 156.Sh STANDARDS 157These functions conform to 158.St -isoC-99 , 159with the exception of 160.Fn wcpcpy , 161.Fn wcpncpy , 162.Fn wcscasecmp , 163.Fn wcsdup , 164.Fn wcsncasecmp , 165and 166.Fn wcsnlen , 167which conform to 168.St -p1003.1-2008 ; 169and 170.Fn wcslcat , 171.Fn wcslcpy , 172and 173.Fn wmempcpy , 174which are extensions. 175