| 1 | .\" Copyright (c) 1991, 1993 |
| 2 | .\" The Regents of the University of California. All rights reserved. |
| 3 | .\" |
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| 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 | .\" 3. All advertising materials mentioning features or use of this software |
| 13 | .\" must display the following acknowledgement: |
| 14 | .\" This product includes software developed by the University of |
| 15 | .\" California, Berkeley and its contributors. |
| 16 | .\" 4. Neither the name of the University nor the names of its contributors |
| 17 | .\" may be used to endorse or promote products derived from this software |
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| 20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 23 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 30 | .\" SUCH DAMAGE. |
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| 32 | .\" @(#)ctype.3 8.1 (Berkeley) 6/4/93 |
| 33 | .\" $FreeBSD: src/lib/libc/locale/ctype.3,v 1.6.2.3 2001/12/14 18:33:54 ru Exp $ |
| 34 | .\" $DragonFly: src/lib/libc/gen/ctype.3,v 1.4 2006/10/21 08:57:31 swildner Exp $ |
| 35 | .\" |
| 36 | .Dd October 21, 2006 |
| 37 | .Dt CTYPE 3 |
| 38 | .Os |
| 39 | .Sh NAME |
| 40 | .Nm isalnum , |
| 41 | .Nm isalpha , |
| 42 | .Nm isascii , |
| 43 | .Nm isblank , |
| 44 | .Nm iscntrl , |
| 45 | .Nm isdigit , |
| 46 | .Nm isgraph , |
| 47 | .Nm islower , |
| 48 | .Nm isprint , |
| 49 | .Nm ispunct , |
| 50 | .Nm isspace , |
| 51 | .Nm isupper , |
| 52 | .Nm isxdigit , |
| 53 | .Nm toascii , |
| 54 | .Nm tolower , |
| 55 | .Nm toupper |
| 56 | .Nd character classification and mapping functions |
| 57 | .Sh LIBRARY |
| 58 | .Lb libc |
| 59 | .Sh SYNOPSIS |
| 60 | .In ctype.h |
| 61 | .Ft int |
| 62 | .Fn isalnum "int c" |
| 63 | .Ft int |
| 64 | .Fn isalpha "int c" |
| 65 | .Ft int |
| 66 | .Fn isascii "int c" |
| 67 | .Ft int |
| 68 | .Fn isblank "int c" |
| 69 | .Ft int |
| 70 | .Fn iscntrl "int c" |
| 71 | .Ft int |
| 72 | .Fn isdigit "int c" |
| 73 | .Ft int |
| 74 | .Fn isgraph "int c" |
| 75 | .Ft int |
| 76 | .Fn islower "int c" |
| 77 | .Ft int |
| 78 | .Fn isprint "int c" |
| 79 | .Ft int |
| 80 | .Fn ispunct "int c" |
| 81 | .Ft int |
| 82 | .Fn isspace "int c" |
| 83 | .Ft int |
| 84 | .Fn isupper "int c" |
| 85 | .Ft int |
| 86 | .Fn isxdigit "int c" |
| 87 | .Ft int |
| 88 | .Fn toascii "int c" |
| 89 | .Ft int |
| 90 | .Fn tolower "int c" |
| 91 | .Ft int |
| 92 | .Fn toupper "int c" |
| 93 | .Sh DESCRIPTION |
| 94 | The above functions perform character tests and conversions on the integer |
| 95 | .Ar c . |
| 96 | They are available as macros, defined in the include file |
| 97 | .In ctype.h , |
| 98 | or as true functions in the C library. |
| 99 | See the specific manual pages for more information. |
| 100 | .Sh SEE ALSO |
| 101 | .Xr isalnum 3 , |
| 102 | .Xr isalpha 3 , |
| 103 | .Xr isascii 3 , |
| 104 | .Xr isblank 3 , |
| 105 | .Xr iscntrl 3 , |
| 106 | .Xr isdigit 3 , |
| 107 | .Xr isgraph 3 , |
| 108 | .Xr islower 3 , |
| 109 | .Xr isprint 3 , |
| 110 | .Xr ispunct 3 , |
| 111 | .Xr isspace 3 , |
| 112 | .Xr isupper 3 , |
| 113 | .Xr isxdigit 3 , |
| 114 | .Xr toascii 3 , |
| 115 | .Xr tolower 3 , |
| 116 | .Xr toupper 3 , |
| 117 | .Xr ascii 7 |
| 118 | .Sh STANDARDS |
| 119 | These functions, with the exception of |
| 120 | .Fn isascii , |
| 121 | .Fn isblank |
| 122 | and |
| 123 | .Fn toascii , |
| 124 | conform to |
| 125 | .St -isoC . |