projects / thirdparty / man-pages.git / blame
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1 | .\" Copyright (c) Bruno Haible <haible@clisp.cons.org> |
| 2 | .\" | |
| e4a74ca8 | 3 | .\" SPDX-License-Identifier: GPL-2.0-or-later |
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4 | .\" |
| 5 | .\" References consulted: | |
| 6 | .\" GNU glibc-2 source code and manual | |
| 7 | .\" Dinkumware C library reference http://www.dinkumware.com/ | |
| 008f1ecc | 8 | .\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html |
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9 | .\" ISO/IEC 9899:1999 |
| 10 | .\" | |
| 4c1c5274 | 11 | .TH iswxdigit 3 (date) "Linux man-pages (unreleased)" |
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12 | .SH NAME |
| 13 | iswxdigit \- test for hexadecimal digit wide character | |
| dc9d3de7 AC |
14 | .SH LIBRARY |
| 15 | Standard C library | |
| 8fc3b2cf | 16 | .RI ( libc ", " \-lc ) |
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17 | .SH SYNOPSIS |
| 18 | .nf | |
| 19 | .B #include <wctype.h> | |
| 68e4db0a | 20 | .PP |
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21 | .BI "int iswxdigit(wint_t " wc ); |
| 22 | .fi | |
| 23 | .SH DESCRIPTION | |
| 60a90ecd MK |
24 | The |
| 25 | .BR iswxdigit () | |
| 26 | function is the wide-character equivalent of the | |
| 27 | .BR isxdigit (3) | |
| 28 | function. | |
| 35cfd378 MK |
29 | It tests whether |
| 30 | .I wc | |
| 31 | is a wide character | |
| d0f17b57 | 32 | belonging to the wide-character class "xdigit". |
| fea681da | 33 | .PP |
| d0f17b57 MK |
34 | The wide-character class "xdigit" is a subclass of the wide-character class |
| 35 | "alnum", and therefore also a subclass of the wide-character class "graph" and | |
| 36 | of the wide-character class "print". | |
| fea681da | 37 | .PP |
| d0f17b57 MK |
38 | Being a subclass of the wide-character class "print", the wide-character class |
| 39 | "xdigit" is disjoint from the wide-character class "cntrl". | |
| fea681da | 40 | .PP |
| d0f17b57 MK |
41 | Being a subclass of the wide-character class "graph", the wide-character class |
| 42 | "xdigit" is disjoint from the wide-character class "space" and its subclass | |
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43 | "blank". |
| 44 | .PP | |
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45 | Being a subclass of the wide-character class "alnum", the wide-character class |
| 46 | "xdigit" is disjoint from the wide-character class "punct". | |
| fea681da | 47 | .PP |
| f81fb444 MK |
48 | The wide-character class "xdigit" always contains at least the |
| 49 | letters \(aqA\(aq to \(aqF\(aq, \(aqa\(aq to \(aqf\(aq | |
| 50 | and the digits \(aq0\(aq to \(aq9\(aq. | |
| 47297adb | 51 | .SH RETURN VALUE |
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52 | The |
| 53 | .BR iswxdigit () | |
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54 | function returns nonzero if |
| 55 | .I wc | |
| 56 | is a wide character | |
| d0f17b57 | 57 | belonging to the wide-character class "xdigit". |
| 2b9b829d | 58 | Otherwise, it returns zero. |
| 4fe7e8ba PH |
59 | .SH ATTRIBUTES |
| 60 | For an explanation of the terms used in this section, see | |
| 61 | .BR attributes (7). | |
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62 | .ad l |
| 63 | .nh | |
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64 | .TS |
| 65 | allbox; | |
| c466875e | 66 | lbx lb lb |
| 4fe7e8ba PH |
67 | l l l. |
| 68 | Interface Attribute Value | |
| 69 | T{ | |
| 70 | .BR iswxdigit () | |
| 71 | T} Thread safety MT-Safe locale | |
| 72 | .TE | |
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73 | .hy |
| 74 | .ad | |
| 75 | .sp 1 | |
| 3113c7f3 | 76 | .SH STANDARDS |
| 17902dc9 | 77 | POSIX.1-2001, POSIX.1-2008, C99. |
| fea681da | 78 | .SH NOTES |
| d9bfdb9c | 79 | The behavior of |
| 60a90ecd | 80 | .BR iswxdigit () |
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81 | depends on the |
| 82 | .B LC_CTYPE | |
| 83 | category of the | |
| fea681da | 84 | current locale. |
| 47297adb | 85 | .SH SEE ALSO |
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86 | .BR iswctype (3), |
| 87 | .BR isxdigit (3) |