projects / thirdparty / man-pages.git / blame
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1 | .\" Copyright (c) Bruno Haible <haible@clisp.cons.org> |
| 2 | .\" | |
| 89e3ffe9 | 3 | .\" %%%LICENSE_START(GPLv2+_DOC_ONEPARA) |
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4 | .\" This is free documentation; you can redistribute it and/or |
| 5 | .\" modify it under the terms of the GNU General Public License as | |
| 6 | .\" published by the Free Software Foundation; either version 2 of | |
| 7 | .\" the License, or (at your option) any later version. | |
| fe382ebf | 8 | .\" %%%LICENSE_END |
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9 | .\" |
| 10 | .\" References consulted: | |
| 11 | .\" GNU glibc-2 source code and manual | |
| 12 | .\" Dinkumware C library reference http://www.dinkumware.com/ | |
| 008f1ecc | 13 | .\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html |
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14 | .\" ISO/IEC 9899:1999 |
| 15 | .\" | |
| 460495ca | 16 | .TH ISWSPACE 3 2015-08-08 "GNU" "Linux Programmer's Manual" |
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17 | .SH NAME |
| 18 | iswspace \- test for whitespace wide character | |
| 19 | .SH SYNOPSIS | |
| 20 | .nf | |
| 21 | .B #include <wctype.h> | |
| 22 | .sp | |
| 23 | .BI "int iswspace(wint_t " wc ); | |
| 24 | .fi | |
| 25 | .SH DESCRIPTION | |
| 60a90ecd MK |
26 | The |
| 27 | .BR iswspace () | |
| 28 | function is the wide-character equivalent of the | |
| 29 | .BR isspace (3) | |
| 30 | function. | |
| 35cfd378 MK |
31 | It tests whether |
| 32 | .I wc | |
| 33 | is a wide character | |
| d0f17b57 | 34 | belonging to the wide-character class "space". |
| fea681da | 35 | .PP |
| d0f17b57 | 36 | The wide-character class "space" is disjoint from the wide-character class |
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37 | "graph" and therefore also disjoint from its subclasses "alnum", "alpha", |
| 38 | "upper", "lower", "digit", "xdigit", "punct". | |
| 39 | .\" Note: UNIX98 (susv2/xbd/locale.html) says that "space" and "graph" may | |
| 68e1685c | 40 | .\" have characters in common, except U+0020. But C99 (ISO/IEC 9899:1999 |
| fea681da MK |
41 | .\" section 7.25.2.1.10) says that "space" and "graph" are disjoint. |
| 42 | .PP | |
| d0f17b57 | 43 | The wide-character class "space" contains the wide-character class "blank". |
| fea681da | 44 | .PP |
| d0f17b57 | 45 | The wide-character class "space" always contains at least the space character |
| f81fb444 MK |
46 | and the control |
| 47 | characters \(aq\\f\(aq, \(aq\\n\(aq, \(aq\\r\(aq, \(aq\\t\(aq, \(aq\\v\(aq. | |
| 47297adb | 48 | .SH RETURN VALUE |
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49 | The |
| 50 | .BR iswspace () | |
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51 | function returns nonzero if |
| 52 | .I wc | |
| 53 | is a wide character | |
| d0f17b57 | 54 | belonging to the wide-character class "space". |
| 2b9b829d | 55 | Otherwise, it returns zero. |
| b31d11a4 PH |
56 | .SH ATTRIBUTES |
| 57 | For an explanation of the terms used in this section, see | |
| 58 | .BR attributes (7). | |
| 59 | .TS | |
| 60 | allbox; | |
| 61 | lb lb lb | |
| 62 | l l l. | |
| 63 | Interface Attribute Value | |
| 64 | T{ | |
| 65 | .BR iswspace () | |
| 66 | T} Thread safety MT-Safe locale | |
| 67 | .TE | |
| 47297adb | 68 | .SH CONFORMING TO |
| 463701f1 | 69 | POSIX.1-2001, POSIX.1-2008, C99. |
| fea681da | 70 | .SH NOTES |
| d9bfdb9c | 71 | The behavior of |
| 60a90ecd | 72 | .BR iswspace () |
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73 | depends on the |
| 74 | .B LC_CTYPE | |
| 75 | category of the | |
| fea681da | 76 | current locale. |
| 47297adb | 77 | .SH SEE ALSO |
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78 | .BR isspace (3), |
| 79 | .BR iswctype (3) |