man3/iswgraph.3

   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 ISWGRAPH 3  1999-07-25 "GNU" "Linux Programmer's Manual"
  15 .SH NAME
  16 iswgraph \- test for graphic wide character
  17 .SH SYNOPSIS
  18 .nf
  19 .B #include <wctype.h>
  20 .sp
  21 .BI "int iswgraph(wint_t " wc );
  22 .fi
  23 .SH DESCRIPTION
  24 The \fBiswgraph\fP function is the wide-character equivalent of the
  25 \fBisgraph\fP function. It tests whether \fIwc\fP is a wide character
  26 belonging to the wide character class "graph".
  27 .PP
  28 The wide character class "graph" is a subclass of the wide character class
  29 "print".
  30 .PP
  31 Being a subclass of the wide character class "print", the wide character class
  32 "graph" is disjoint from the wide character class "cntrl".
  33 .PP
  34 The wide character class "graph" is disjoint from the wide character class
  35 "space" and therefore also disjoint from its subclass "blank".
  36 .\" Note: UNIX98 (susv2/xbd/locale.html) says that "graph" and "space" may
  37 .\" have characters in common, except U+0020. But ISO C99 (ISO/IEC 9899:1999
  38 .\" section 7.25.2.1.10) says that "space" and "graph" are disjoint.
  39 .PP
  40 The wide character class "graph" contains all the wide characters from the
  41 wide character class "print" except the space character. It therefore contains
  42 the wide character classes "alnum" and "punct".
  43 .SH "RETURN VALUE"
  44 The \fBiswgraph\fP function returns non-zero if \fIwc\fP is a wide character
  45 belonging to the wide character class "graph". Otherwise it returns zero.
  46 .SH "CONFORMING TO"
  47 ISO/ANSI C, UNIX98
  48 .SH "SEE ALSO"
  49 .BR isgraph (3),
  50 .BR iswctype (3)
  51 .SH NOTES
  52 The behaviour of \fBiswgraph\fP depends on the LC_CTYPE category of the
  53 current locale.