projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 224c7076 | 1 | .\" Copyright (c) 1993 |
| e9ce8d39 A |
2 | .\" The Regents of the University of California. All rights reserved. |
| 3 | .\" | |
| 4 | .\" Redistribution and use in source and binary forms, with or without | |
| 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 | |
| 18 | .\" without specific prior written permission. | |
| 19 | .\" | |
| 20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 21 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 22 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 23 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 24 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 25 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 26 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 27 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 28 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 29 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 30 | .\" SUCH DAMAGE. | |
| 31 | .\" | |
| 224c7076 A |
32 | .\" @(#)digittoint.3 8.1 (Berkeley) 6/4/93 |
| 33 | .\" $FreeBSD: src/lib/libc/locale/digittoint.3,v 1.3 2004/03/30 07:19:35 tjr Exp $ | |
| e9ce8d39 | 34 | .\" |
| 224c7076 A |
35 | .Dd April 6, 2001 |
| 36 | .Dt DIGITTOINT 3 | |
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37 | .Os |
| 38 | .Sh NAME | |
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39 | .Nm digittoint , |
| 40 | .Nm digittoint_l | |
| 41 | .Nd convert a numeric character to its integer value | |
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42 | .Sh LIBRARY |
| 43 | .Lb libc | |
| 44 | .Sh SYNOPSIS | |
| 224c7076 A |
45 | .In ctype.h |
| 46 | .Ft int | |
| 47 | .Fo digittoint | |
| 48 | .Fa "int c" | |
| 49 | .Fc | |
| 50 | .In xlocale.h | |
| 51 | .In ctype.h | |
| 52 | .Ft int | |
| 53 | .Fo digittoint_l | |
| 54 | .Fa "int c" | |
| 55 | .Fa "locale_t loc" | |
| 56 | .Fc | |
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57 | .Sh DESCRIPTION |
| 58 | The | |
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59 | .Fn digittoint |
| 60 | function converts a numeric character to its corresponding integer value. | |
| 61 | The character can be any decimal digit or hexadecimal digit. | |
| 62 | With hexadecimal characters, the case of the values does not matter. | |
| 63 | .Pp | |
| 64 | While the | |
| 65 | .Fn digittoint | |
| 66 | function uses the current locale, the | |
| 67 | .Fn digittoint_l | |
| 68 | function may be passed a locale directly. See | |
| 69 | .Xr xlocale 3 | |
| 70 | for more information. | |
| e9ce8d39 | 71 | .Sh RETURN VALUES |
| 5b2abdfb | 72 | The |
| 224c7076 A |
73 | .Fn digittoint |
| 74 | function always returns an integer from the range of 0 to 15. | |
| 75 | If the given character was not a digit as defined by | |
| 76 | .Xr isxdigit 3 , | |
| 77 | the function will return 0. | |
| 78 | .Sh SEE ALSO | |
| 79 | .Xr ctype 3 , | |
| 80 | .Xr isdigit 3 , | |
| 81 | .Xr isxdigit 3 , | |
| 82 | .Xr xlocale 3 |