1.\" Copyright (c) 2011 The FreeBSD Foundation 2.\" 3.\" This documentation was written by David Chisnall under sponsorship from 4.\" the FreeBSD Foundation. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\" 27.\" $FreeBSD$ 28.\" 29.Dd December 19, 2022 30.Dt CTYPE_L 3 31.Os 32.Sh NAME 33.Nm digittoint_l , 34.Nm isalnum_l , 35.Nm isalpha_l , 36.Nm isblank_l , 37.Nm iscntrl_l , 38.Nm isdigit_l , 39.Nm isgraph_l , 40.Nm ishexnumber_l , 41.Nm isideogram_l , 42.Nm islower_l , 43.Nm isnumber_l , 44.Nm isphonogram_l , 45.Nm isprint_l , 46.Nm ispunct_l , 47.Nm isrune_l , 48.Nm isspace_l , 49.Nm isspecial_l , 50.Nm isupper_l , 51.Nm isxdigit_l , 52.Nm tolower_l , 53.Nm toupper_l 54.Nd character classification functions 55.Sh LIBRARY 56.Lb libc 57.Sh SYNOPSIS 58.In ctype.h 59.Ft int 60.Fn digittoint_l "int c" "locale_t loc" 61.Ft int 62.Fn isalnum_l "int c" "locale_t loc" 63.Ft int 64.Fn isalpha_l "int c" "locale_t loc" 65.Ft int 66.Fn iscntrl_l "int c" "locale_t loc" 67.Ft int 68.Fn isdigit_l "int c" "locale_t loc" 69.Ft int 70.Fn isgraph_l "int c" "locale_t loc" 71.Ft int 72.Fn ishexnumber_l "int c" "locale_t loc" 73.Ft int 74.Fn isideogram_l "int c" "locale_t loc" 75.Ft int 76.Fn islower_l "int c" "locale_t loc" 77.Ft int 78.Fn isnumber_l "int c" "locale_t loc" 79.Ft int 80.Fn isphonogram_l "int c" "locale_t loc" 81.Ft int 82.Fn isspecial_l "int c" "locale_t loc" 83.Ft int 84.Fn isprint_l "int c" "locale_t loc" 85.Ft int 86.Fn ispunct_l "int c" "locale_t loc" 87.Ft int 88.Fn isrune_l "int c" "locale_t loc" 89.Ft int 90.Fn isspace_l "int c" "locale_t loc" 91.Ft int 92.Fn isupper_l "int c" "locale_t loc" 93.Ft int 94.Fn isxdigit_l "int c" "locale_t loc" 95.Ft int 96.Fn tolower_l "int c" "locale_t loc" 97.Ft int 98.Fn toupper_l "int c" "locale_t loc" 99.Sh DESCRIPTION 100The above functions perform character tests and conversions on the integer 101.Fa c 102in the locale 103.Fa loc . 104They behave in the same way as the versions without the _l suffix, but use the 105specified locale rather than the global or per-thread locale. 106.In ctype.h , 107or as true functions in the C library. 108See the specific manual pages for more information. 109.Sh SEE ALSO 110.Xr digittoint_l 3 , 111.Xr isalnum_l 3 , 112.Xr isalpha_l 3 , 113.Xr isblank_l 3 , 114.Xr iscntrl_l 3 , 115.Xr isdigit_l 3 , 116.Xr isgraph_l 3 , 117.Xr isideogram_l 3 , 118.Xr islower_l 3 , 119.Xr isphonogram_l 3 , 120.Xr isprint_l 3 , 121.Xr ispunct_l 3 , 122.Xr isrune_l 3 , 123.Xr isspace_l 3 , 124.Xr isspecial_l 3 , 125.Xr isupper_l 3 , 126.Xr isxdigit_l 3 , 127.Xr tolower_l 3 , 128.Xr toupper_l 3 , 129.Xr wctype_l 3 , 130.Xr xlocale_l 3 131.Sh STANDARDS 132These functions conform to 133.St -p1003.1-2008 , 134except for 135.Fn digittoint_l , 136.Fn ishexnumber_l , 137.Fn isideogram_l , 138.Fn isnumber_l , 139.Fn isphonogram_l , 140.Fn isrune_l 141and 142.Fn isspecial_l 143which are 144.Fx 145extensions. 146