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.Dd December 19, 2022 28.Dt CTYPE_L 3 29.Os 30.Sh NAME 31.Nm digittoint_l , 32.Nm isalnum_l , 33.Nm isalpha_l , 34.Nm isblank_l , 35.Nm iscntrl_l , 36.Nm isdigit_l , 37.Nm isgraph_l , 38.Nm ishexnumber_l , 39.Nm isideogram_l , 40.Nm islower_l , 41.Nm isnumber_l , 42.Nm isphonogram_l , 43.Nm isprint_l , 44.Nm ispunct_l , 45.Nm isrune_l , 46.Nm isspace_l , 47.Nm isspecial_l , 48.Nm isupper_l , 49.Nm isxdigit_l , 50.Nm tolower_l , 51.Nm toupper_l 52.Nd character classification functions 53.Sh LIBRARY 54.Lb libc 55.Sh SYNOPSIS 56.In ctype.h 57.Ft int 58.Fn digittoint_l "int c" "locale_t loc" 59.Ft int 60.Fn isalnum_l "int c" "locale_t loc" 61.Ft int 62.Fn isalpha_l "int c" "locale_t loc" 63.Ft int 64.Fn iscntrl_l "int c" "locale_t loc" 65.Ft int 66.Fn isdigit_l "int c" "locale_t loc" 67.Ft int 68.Fn isgraph_l "int c" "locale_t loc" 69.Ft int 70.Fn ishexnumber_l "int c" "locale_t loc" 71.Ft int 72.Fn isideogram_l "int c" "locale_t loc" 73.Ft int 74.Fn islower_l "int c" "locale_t loc" 75.Ft int 76.Fn isnumber_l "int c" "locale_t loc" 77.Ft int 78.Fn isphonogram_l "int c" "locale_t loc" 79.Ft int 80.Fn isspecial_l "int c" "locale_t loc" 81.Ft int 82.Fn isprint_l "int c" "locale_t loc" 83.Ft int 84.Fn ispunct_l "int c" "locale_t loc" 85.Ft int 86.Fn isrune_l "int c" "locale_t loc" 87.Ft int 88.Fn isspace_l "int c" "locale_t loc" 89.Ft int 90.Fn isupper_l "int c" "locale_t loc" 91.Ft int 92.Fn isxdigit_l "int c" "locale_t loc" 93.Ft int 94.Fn tolower_l "int c" "locale_t loc" 95.Ft int 96.Fn toupper_l "int c" "locale_t loc" 97.Sh DESCRIPTION 98The above functions perform character tests and conversions on the integer 99.Fa c 100in the locale 101.Fa loc . 102They behave in the same way as the versions without the _l suffix, but use the 103specified locale rather than the global or per-thread locale. 104.In ctype.h , 105or as true functions in the C library. 106See the specific manual pages for more information. 107.Sh SEE ALSO 108.Xr digittoint_l 3 , 109.Xr isalnum_l 3 , 110.Xr isalpha_l 3 , 111.Xr isblank_l 3 , 112.Xr iscntrl_l 3 , 113.Xr isdigit_l 3 , 114.Xr isgraph_l 3 , 115.Xr isideogram_l 3 , 116.Xr islower_l 3 , 117.Xr isphonogram_l 3 , 118.Xr isprint_l 3 , 119.Xr ispunct_l 3 , 120.Xr isrune_l 3 , 121.Xr isspace_l 3 , 122.Xr isspecial_l 3 , 123.Xr isupper_l 3 , 124.Xr isxdigit_l 3 , 125.Xr tolower_l 3 , 126.Xr toupper_l 3 , 127.Xr wctype_l 3 , 128.Xr xlocale_l 3 129.Sh STANDARDS 130These functions conform to 131.St -p1003.1-2008 , 132except for 133.Fn digittoint_l , 134.Fn ishexnumber_l , 135.Fn isideogram_l , 136.Fn isnumber_l , 137.Fn isphonogram_l , 138.Fn isrune_l 139and 140.Fn isspecial_l 141which are 142.Fx 143extensions. 144