'\" t .\" Copyright (c) Bruno Haible .\" .\" 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 iswgraph 3 2023-10-31 "Linux man-pages 6.7" .SH NAME iswgraph \- test for graphic wide character .SH LIBRARY Standard C library .RI ( libc ", " \-lc ) .SH SYNOPSIS .nf .B #include .P .BI "int iswgraph(wint_t " wc ); .fi .SH DESCRIPTION The .BR iswgraph () function is the wide-character equivalent of the .BR isgraph (3) function. It tests whether .I wc is a wide character belonging to the wide-character class "graph". .P The wide-character class "graph" is a subclass of the wide-character class "print". .P Being a subclass of the wide-character class "print", the wide-character class "graph" is disjoint from the wide-character class "cntrl". .P The wide-character class "graph" is disjoint from the wide-character class "space" and therefore also disjoint from its subclass "blank". .\" Note: UNIX98 (susv2/xbd/locale.html) says that "graph" and "space" may .\" have characters in common, except U+0020. But C99 (ISO/IEC 9899:1999 .\" section 7.25.2.1.10) says that "space" and "graph" are disjoint. .P The wide-character class "graph" contains all the wide characters from the wide-character class "print" except the space character. It therefore contains the wide-character classes "alnum" and "punct". .SH RETURN VALUE The .BR iswgraph () function returns nonzero if .I wc is a wide character belonging to the wide-character class "graph". 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 iswgraph () T} Thread safety MT-Safe locale .TE .SH STANDARDS C11, POSIX.1-2008. .SH HISTORY POSIX.1-2001, C99. .SH NOTES The behavior of .BR iswgraph () depends on the .B LC_CTYPE category of the current locale. .SH SEE ALSO .BR isgraph (3), .BR iswctype (3)