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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/iswlower.3 | |
parent | Initial commit. (diff) | |
download | manpages-399644e47874bff147afb19c89228901ac39340e.tar.xz manpages-399644e47874bff147afb19c89228901ac39340e.zip |
Adding upstream version 6.05.01.upstream/6.05.01
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | man3/iswlower.3 | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/man3/iswlower.3 b/man3/iswlower.3 new file mode 100644 index 0000000..1115275 --- /dev/null +++ b/man3/iswlower.3 @@ -0,0 +1,107 @@ +'\" 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 iswlower 3 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +iswlower \- test for lowercase wide character +.SH LIBRARY +Standard C library +.RI ( libc ", " \-lc ) +.SH SYNOPSIS +.nf +.B #include <wctype.h> +.PP +.BI "int iswlower(wint_t " wc ); +.fi +.SH DESCRIPTION +The +.BR iswlower () +function is the wide-character equivalent of the +.BR islower (3) +function. +It tests whether +.I wc +is a wide character +belonging to the wide-character class "lower". +.PP +The wide-character class "lower" is a subclass of the wide-character class +"alpha", and therefore also a subclass +of the wide-character class "alnum", 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 +"lower" is disjoint from the wide-character class "cntrl". +.PP +Being a subclass of the wide-character class "graph", +the wide-character class "lower" 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 +"lower" is disjoint from the wide-character class "punct". +.PP +Being a subclass of the wide-character class "alpha", +the wide-character class +"lower" is disjoint from the wide-character class "digit". +.PP +The wide-character class "lower" contains at least +those characters +.I wc +which are equal to +.I towlower(wc) +and different from +.IR towupper(wc) . +.PP +The wide-character class "lower" always contains +at least the letters \[aq]a\[aq] to \[aq]z\[aq]. +.SH RETURN VALUE +The +.BR iswlower () +function returns nonzero +if +.I wc +is a wide character +belonging to the wide-character class "lower". +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 iswlower () +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 iswlower () +depends on the +.B LC_CTYPE +category of the +current locale. +.PP +This function is not very appropriate for dealing with Unicode characters, +because Unicode knows about three cases: upper, lower, and title case. +.SH SEE ALSO +.BR islower (3), +.BR iswctype (3), +.BR towlower (3) |