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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
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| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:40:15 +0000 |
| commit | 399644e47874bff147afb19c89228901ac39340e (patch) | |
| tree | 1c4c0b733f4c16b5783b41bebb19194a9ef62ad1 /man3/iswalpha.3 | |
| parent | Initial commit. (diff) | |
| download | manpages-upstream/6.05.01.tar.xz manpages-upstream/6.05.01.zip | |
Adding upstream version 6.05.01.upstream/6.05.01
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man3/iswalpha.3')
| -rw-r--r-- | man3/iswalpha.3 | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/man3/iswalpha.3 b/man3/iswalpha.3 new file mode 100644 index 0000000..a05dfe9 --- /dev/null +++ b/man3/iswalpha.3 @@ -0,0 +1,97 @@ +'\" t +.\" Copyright (c) Bruno Haible <haible@clisp.cons.org> +.\" +.\" SPDX-License-Identifier: GPL-2.0-or-later +.\" +.\" References consulted: +.\" GNU glibc-2 source code and manual +.\" Dinkumware C library reference http://www.dinkumware.com/ +.\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html +.\" ISO/IEC 9899:1999 +.\" +.TH iswalpha 3 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +iswalpha \- test for alphabetic wide character +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <wctype.h> +.PP +.BI "int iswalpha(wint_t " wc ); +.fi +.SH DESCRIPTION +The +.BR iswalpha () +function is the wide-character equivalent of the +.BR isalpha (3) +function. +It tests whether +.I wc +is a wide character +belonging to the wide-character class "alpha". +.PP +The wide-character class "alpha" is a subclass of the +wide-character class "alnum", +and therefore also a subclass of the wide-character class "graph" and +of the wide-character class "print". +.PP +Being a subclass of the wide-character class "print", +the wide-character class +"alpha" is disjoint from the wide-character class "cntrl". +.PP +Being a subclass of the wide-character class "graph", +the wide-character class "alpha" is disjoint from +the wide-character class "space" and its subclass "blank". +.PP +Being a subclass of the wide-character class "alnum", +the wide-character class "alpha" is disjoint from the +wide-character class "punct". +.PP +The wide-character class "alpha" is disjoint from the wide-character class +"digit". +.PP +The wide-character class "alpha" contains the wide-character classes "upper" +and "lower". +.PP +The wide-character class "alpha" always contains at least the +letters \[aq]A\[aq] to \[aq]Z\[aq] and \[aq]a\[aq] to \[aq]z\[aq]. +.SH RETURN VALUE +The +.BR iswalpha () +function returns nonzero +if +.I wc +is a wide character +belonging to the wide-character class "alpha". +Otherwise, it returns zero. +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.na +.nh +.BR iswalpha () +T} Thread safety MT-Safe locale +.TE +.sp 1 +.SH STANDARDS +C11, POSIX.1-2008. +.SH HISTORY +POSIX.1-2001, C99. +.SH NOTES +The behavior of +.BR iswalpha () +depends on the +.B LC_CTYPE +category of the +current locale. +.SH SEE ALSO +.BR isalpha (3), +.BR iswctype (3) |