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 |
| fea681da MK |
9 | .\" ISO/IEC 9899:1999 |
| 10 | .\" | |
| 45186a5d | 11 | .TH ISWSPACE 3 2021-03-22 "Linux man-pages (unreleased)" |
| fea681da MK |
12 | .SH NAME |
| 13 | iswspace \- test for whitespace wide character | |
| 19b989d3 AC |
14 | .SH LIBRARY |
| 15 | Standard C library | |
| 8fc3b2cf | 16 | .RI ( libc ", " \-lc ) |
| fea681da MK |
17 | .SH SYNOPSIS |
| 18 | .nf | |
| 19 | .B #include <wctype.h> | |
| 68e4db0a | 20 | .PP |
| fea681da MK |
21 | .BI "int iswspace(wint_t " wc ); |
| 22 | .fi | |
| 23 | .SH DESCRIPTION | |
| 60a90ecd MK |
24 | The |
| 25 | .BR iswspace () | |
| 26 | function is the wide-character equivalent of the | |
| 27 | .BR isspace (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 "space". |
| fea681da | 33 | .PP |
| d0f17b57 | 34 | The wide-character class "space" is disjoint from the wide-character class |
| fea681da MK |
35 | "graph" and therefore also disjoint from its subclasses "alnum", "alpha", |
| 36 | "upper", "lower", "digit", "xdigit", "punct". | |
| 37 | .\" Note: UNIX98 (susv2/xbd/locale.html) says that "space" and "graph" may | |
| 68e1685c | 38 | .\" have characters in common, except U+0020. But C99 (ISO/IEC 9899:1999 |
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39 | .\" section 7.25.2.1.10) says that "space" and "graph" are disjoint. |
| 40 | .PP | |
| d0f17b57 | 41 | The wide-character class "space" contains the wide-character class "blank". |
| fea681da | 42 | .PP |
| d0f17b57 | 43 | The wide-character class "space" always contains at least the space character |
| f81fb444 | 44 | and the control |
| d1a71985 | 45 | characters \(aq\ef\(aq, \(aq\en\(aq, \(aq\er\(aq, \(aq\et\(aq, \(aq\ev\(aq. |
| 47297adb | 46 | .SH RETURN VALUE |
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47 | The |
| 48 | .BR iswspace () | |
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49 | function returns nonzero if |
| 50 | .I wc | |
| 51 | is a wide character | |
| d0f17b57 | 52 | belonging to the wide-character class "space". |
| 2b9b829d | 53 | Otherwise, it returns zero. |
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54 | .SH ATTRIBUTES |
| 55 | For an explanation of the terms used in this section, see | |
| 56 | .BR attributes (7). | |
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57 | .ad l |
| 58 | .nh | |
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59 | .TS |
| 60 | allbox; | |
| c466875e | 61 | lbx lb lb |
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62 | l l l. |
| 63 | Interface Attribute Value | |
| 64 | T{ | |
| 65 | .BR iswspace () | |
| 66 | T} Thread safety MT-Safe locale | |
| 67 | .TE | |
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68 | .hy |
| 69 | .ad | |
| 70 | .sp 1 | |
| 3113c7f3 | 71 | .SH STANDARDS |
| 463701f1 | 72 | POSIX.1-2001, POSIX.1-2008, C99. |
| fea681da | 73 | .SH NOTES |
| d9bfdb9c | 74 | The behavior of |
| 60a90ecd | 75 | .BR iswspace () |
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76 | depends on the |
| 77 | .B LC_CTYPE | |
| 78 | category of the | |
| fea681da | 79 | current locale. |
| 47297adb | 80 | .SH SEE ALSO |
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81 | .BR isspace (3), |
| 82 | .BR iswctype (3) |