man3/iswctype.3

   1 .\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
   2 .\"
   3 .\" SPDX-License-Identifier: GPL-2.0-or-later
   4 .\"
   5 .\" References consulted:
   6 .\"   GNU glibc-2 source code and manual
   7 .\"   Dinkumware C library reference http://www.dinkumware.com/
   8 .\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
   9 .\"   ISO/IEC 9899:1999
  10 .\"
  11 .TH ISWCTYPE 3  2021-03-22 "Linux man-pages (unreleased)" "Linux Programmer's Manual"
  12 .SH NAME
  13 iswctype \- wide-character classification
  14 .SH LIBRARY
  15 Standard C library
  16 .RI ( libc ", " \-lc )
  17 .SH SYNOPSIS
  18 .nf
  19 .B #include <wctype.h>
  20 .PP
  21 .BI "int iswctype(wint_t " wc ", wctype_t " desc );
  22 .fi
  23 .SH DESCRIPTION
  24 If
  25 .I wc
  26 is a wide character having the character property designated by
  27 .I desc
  28 (or in other words: belongs to the character class designated by
  29 .IR desc ),
  30 the
  31 .BR iswctype ()
  32 function returns nonzero.
  33 Otherwise, it
  34 returns zero.
  35 If
  36 .I wc
  37 is
  38 .BR WEOF ,
  39 zero is returned.
  40 .PP
  41 .I desc
  42 must be a character property descriptor
  43 returned by the
  44 .BR wctype (3)
  45 function.
  46 .SH RETURN VALUE
  47 The
  48 .BR iswctype ()
  49 function returns nonzero if
  50 the
  51 .I wc
  52 has the designated
  53 property.
  54 Otherwise, it returns 0.
  55 .SH ATTRIBUTES
  56 For an explanation of the terms used in this section, see
  57 .BR attributes (7).
  58 .ad l
  59 .nh
  60 .TS
  61 allbox;
  62 lbx lb lb
  63 l l l.
  64 Interface       Attribute       Value
  65 T{
  66 .BR iswctype ()
  67 T}      Thread safety   MT-Safe
  68 .TE
  69 .hy
  70 .ad
  71 .sp 1
  72 .SH STANDARDS
  73 POSIX.1-2001, POSIX.1-2008, C99.
  74 .SH NOTES
  75 The behavior of
  76 .BR iswctype ()
  77 depends on the
  78 .B LC_CTYPE
  79 category of the
  80 current locale.
  81 .SH SEE ALSO
  82 .BR iswalnum (3),
  83 .BR iswalpha (3),
  84 .BR iswblank (3),
  85 .BR iswcntrl (3),
  86 .BR iswdigit (3),
  87 .BR iswgraph (3),
  88 .BR iswlower (3),
  89 .BR iswprint (3),
  90 .BR iswpunct (3),
  91 .BR iswspace (3),
  92 .BR iswupper (3),
  93 .BR iswxdigit (3),
  94 .BR wctype (3)