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 | .\" | |
| e4ecdf36 | 16 | .TH TOWUPPER 3 2014-01-22 "GNU" "Linux Programmer's Manual" |
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17 | .SH NAME |
| 18 | towupper \- convert a wide character to uppercase | |
| 19 | .SH SYNOPSIS | |
| 20 | .nf | |
| 21 | .B #include <wctype.h> | |
| 22 | .sp | |
| 23 | .BI "wint_t towupper(wint_t " wc ); | |
| 24 | .fi | |
| 25 | .SH DESCRIPTION | |
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26 | The |
| 27 | .BR towupper () | |
| 28 | function is the wide-character equivalent of the | |
| 29 | .BR toupper (3) | |
| 30 | function. | |
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31 | If |
| 32 | .I wc | |
| 33 | is a wide character, it is converted to | |
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34 | uppercase. |
| 35 | Characters which do not have case are returned unchanged. | |
| 35cfd378 | 36 | If |
| 51700fd7 | 37 | .IR wc |
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38 | is |
| 39 | .BR WEOF , | |
| 40 | .B WEOF | |
| 41 | is returned. | |
| 47297adb | 42 | .SH RETURN VALUE |
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43 | The |
| 44 | .BR towupper () | |
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45 | function returns the uppercase equivalent of |
| 46 | .IR wc , | |
| 47 | or | |
| 51700fd7 | 48 | .BR WEOF |
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49 | if |
| 50 | .I wc | |
| 51 | is | |
| 52 | .BR WEOF . | |
| c15158e2 PH |
53 | .SH ATTRIBUTES |
| 54 | .SS Multithreading (see pthreads(7)) | |
| 55 | The | |
| 56 | .BR towupper () | |
| 57 | function is thread-safe with exceptions. | |
| 58 | It can be safely used in multithreaded applications, as long as | |
| 59 | .BR setlocale (3) | |
| e4ecdf36 | 60 | is not called to change the locale during its execution. |
| 47297adb | 61 | .SH CONFORMING TO |
| 68e1685c | 62 | C99. |
| fea681da | 63 | .SH NOTES |
| d9bfdb9c | 64 | The behavior of |
| 60a90ecd | 65 | .BR towupper () |
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66 | depends on the |
| 67 | .B LC_CTYPE | |
| 68 | category of the | |
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69 | current locale. |
| 70 | .PP | |
| 71 | This function is not very appropriate for dealing with Unicode characters, | |
| 72 | because Unicode knows about three cases: upper, lower and title case. | |
| 47297adb | 73 | .SH SEE ALSO |
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74 | .BR iswupper (3), |
| 75 | .BR towctrans (3), | |
| 76 | .BR towlower (3) |