proc.5: Note kernel version for /proc/PID/smaps VmFlags "wf" flag

[thirdparty/man-pages.git] / man3 / iswblank.3

diff --git a/man3/iswblank.3 b/man3/iswblank.3
index cf1016ab4174b0e744fb64f10a27241003e23aa0..dde3c1854ef2fea7cb3f1b89a002d6fe4eb7904b 100644 (file)
--- a/man3/iswblank.3
+++ b/man3/iswblank.3
@@ -1,48 +1,88 @@
 .\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
 .\"
+.\" %%%LICENSE_START(GPLv2+_DOC_ONEPARA)
 .\" This is free documentation; you can redistribute it and/or
 .\" modify it under the terms of the GNU General Public License as
 .\" published by the Free Software Foundation; either version 2 of
 .\" the License, or (at your option) any later version.
+.\" %%%LICENSE_END
 .\"
 .\" 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
+.\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
 .\"   ISO/IEC 9899:1999
 .\"
-.TH ISWBLANK 3  1999-07-25 "GNU" "Linux Programmer's Manual"
+.TH ISWBLANK 3  2019-03-06 "GNU" "Linux Programmer's Manual"
 .SH NAME
 iswblank \- test for whitespace wide character
 .SH SYNOPSIS
 .nf
 .B #include <wctype.h>
-.sp
+.PP
 .BI "int iswblank(wint_t " wc );
 .fi
+.PP
+.in -4n
+Feature Test Macro Requirements for glibc (see
+.BR feature_test_macros (7)):
+.in
+.PP
+.ad l
+.BR iswblank ():
+.RS
+_ISOC99_SOURCE || _POSIX_C_SOURCE\ >=\ 200112L
+.RE
+.ad
 .SH DESCRIPTION
-The \fBiswblank\fP() function is the wide-character equivalent of the
-\fBisblank\fP() function. It tests whether \fIwc\fP is a wide character
-belonging to the wide character class "blank".
+The
+.BR iswblank ()
+function is the wide-character equivalent of the
+.BR isblank (3)
+function.
+It tests whether \fIwc\fP is a wide character
+belonging to the wide-character class "blank".
 .PP
-The wide character class "blank" is a subclass of the wide character class
+The wide-character class "blank" is a subclass of the wide-character class
 "space".
 .PP
-Being a subclass of the wide character class "space", the wide character class
-"blank" is disjoint from the wide character class "graph" and therefore also
-disjoint from its subclasses "alnum", "alpha", "upper", "lower", "digit",
+Being a subclass of the wide-character class "space",
+the wide-character class "blank" is disjoint from the
+wide-character class "graph" and therefore also disjoint
+from its subclasses "alnum", "alpha", "upper", "lower", "digit",
 "xdigit", "punct".
 .PP
-The wide character class "blank" always contains at least the space character
-and the control character '\\t'.
-.SH "RETURN VALUE"
-The \fBiswblank\fP() function returns non-zero if \fIwc\fP is a wide character
-belonging to the wide character class "blank". Otherwise it returns zero.
-.SH "CONFORMING TO"
-This function is a GNU extension.
-.SH "SEE ALSO"
-.BR isblank (3),
-.BR iswctype (3)
+The wide-character class "blank" always contains
+at least the space character
+and the control character \(aq\et\(aq.
+.SH RETURN VALUE
+The
+.BR iswblank ()
+function returns nonzero
+if \fIwc\fP is a wide character
+belonging to the wide-character class "blank".
+Otherwise, it returns zero.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface      Attribute       Value
+T{
+.BR iswblank ()
+T}     Thread safety   MT-Safe locale
+.TE
+.SH CONFORMING TO
+POSIX.1-2001, POSIX.1-2008.
 .SH NOTES
-The behaviour of \fBiswblank\fP() depends on the LC_CTYPE category of the
+The behavior of
+.BR iswblank ()
+depends on the
+.B LC_CTYPE
+category of the
 current locale.
+.SH SEE ALSO
+.BR isblank (3),
+.BR iswctype (3)