projects / thirdparty / man-pages.git / blame
| Commit | Line | Data |
|---|---|---|
| fea681da MK |
1 | .\" Copyright (c) Bruno Haible <haible@clisp.cons.org> |
| 2 | .\" | |
| 3 | .\" This is free documentation; you can redistribute it and/or | |
| 4 | .\" modify it under the terms of the GNU General Public License as | |
| 5 | .\" published by the Free Software Foundation; either version 2 of | |
| 6 | .\" the License, or (at your option) any later version. | |
| 7 | .\" | |
| 8 | .\" References consulted: | |
| 9 | .\" GNU glibc-2 source code and manual | |
| 10 | .\" Dinkumware C library reference http://www.dinkumware.com/ | |
| 11 | .\" OpenGroup's Single Unix specification http://www.UNIX-systems.org/online.html | |
| 12 | .\" ISO/IEC 9899:1999 | |
| 13 | .\" | |
| 14 | .TH ISWUPPER 3 1999-07-25 "GNU" "Linux Programmer's Manual" | |
| 15 | .SH NAME | |
| 16 | iswupper \- test for uppercase wide character | |
| 17 | .SH SYNOPSIS | |
| 18 | .nf | |
| 19 | .B #include <wctype.h> | |
| 20 | .sp | |
| 21 | .BI "int iswupper(wint_t " wc ); | |
| 22 | .fi | |
| 23 | .SH DESCRIPTION | |
| e511ffb6 | 24 | The \fBiswupper\fP() function is the wide-character equivalent of the |
| c13182ef MK |
25 | \fBisupper\fP() function. |
| 26 | It tests whether \fIwc\fP is a wide character | |
| fea681da MK |
27 | belonging to the wide character class "upper". |
| 28 | .PP | |
| 29 | The wide character class "upper" is a subclass of the wide character class | |
| 30 | "alpha", and therefore also a subclass of the wide character class "alnum", of | |
| 31 | the wide character class "graph" and of the wide character class "print". | |
| 32 | .PP | |
| 33 | Being a subclass of the wide character class "print", the wide character class | |
| 34 | "upper" is disjoint from the wide character class "cntrl". | |
| 35 | .PP | |
| 36 | Being a subclass of the wide character class "graph", the wide character class | |
| 37 | "upper" is disjoint from the wide character class "space" and its subclass | |
| 38 | "blank". | |
| 39 | .PP | |
| 40 | Being a subclass of the wide character class "alnum", the wide character class | |
| 41 | "upper" is disjoint from the wide character class "punct". | |
| 42 | .PP | |
| 43 | Being a subclass of the wide character class "alpha", the wide character class | |
| 44 | "upper" is disjoint from the wide character class "digit". | |
| 45 | .PP | |
| 46 | The wide character class "upper" contains at least those characters \fIwc\fP | |
| 47 | which are equal to \fItowupper(wc)\fP and different from \fItowlower(wc)\fP. | |
| 48 | .PP | |
| 49 | The wide character class "upper" always contains at least the letters 'A' | |
| 50 | to 'Z'. | |
| 51 | .SH "RETURN VALUE" | |
| e511ffb6 | 52 | The \fBiswupper\fP() function returns non-zero if \fIwc\fP is a wide character |
| c13182ef MK |
53 | belonging to the wide character class "upper". |
| 54 | Otherwise it returns zero. | |
| fea681da | 55 | .SH "CONFORMING TO" |
| 68e1685c | 56 | C99. |
| fea681da MK |
57 | .SH "SEE ALSO" |
| 58 | .BR isupper (3), | |
| 59 | .BR iswctype (3), | |
| 60 | .BR towupper (3) | |
| 61 | .SH NOTES | |
| e511ffb6 | 62 | The behaviour of \fBiswupper\fP() depends on the LC_CTYPE category of the |
| fea681da MK |
63 | current locale. |
| 64 | .PP | |
| 65 | This function is not very appropriate for dealing with Unicode characters, | |
| 66 | because Unicode knows about three cases: upper, lower and title case. |