'\" 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 iswpunct 3 2023-03-30 "Linux man-pages 6.04" .SH NAME iswpunct \- test for punctuation or symbolic wide character .SH LIBRARY Standard C library .RI ( libc ", " \-lc ) .SH SYNOPSIS .nf .B #include .PP .BI "int iswpunct(wint_t " wc ); .fi .SH DESCRIPTION The .BR iswpunct () function is the wide-character equivalent of the .BR ispunct (3) function. It tests whether .I wc is a wide character belonging to the wide-character class "punct". .PP The wide-character class "punct" is a subclass of the wide-character class "graph", and therefore also a subclass of the wide-character class "print". .PP The wide-character class "punct" is disjoint from the wide-character class "alnum" and therefore also disjoint from its subclasses "alpha", "upper", "lower", "digit", "xdigit". .PP Being a subclass of the wide-character class "print", the wide-character class "punct" is disjoint from the wide-character class "cntrl". .PP Being a subclass of the wide-character class "graph", the wide-character class "punct" is disjoint from the wide-character class "space" and its subclass "blank". .SH RETURN VALUE The .BR iswpunct () function returns nonzero if .I wc is a wide-character belonging to the wide-character class "punct". Otherwise, it returns zero. .SH ATTRIBUTES For an explanation of the terms used in this section, see .BR attributes (7). .ad l .nh .TS allbox; lbx lb lb l l l. Interface Attribute Value T{ .BR iswpunct () T} Thread safety MT-Safe locale .TE .hy .ad .sp 1 .SH STANDARDS C11, POSIX.1-2008. .SH HISTORY POSIX.1-2001, C99. .SH NOTES The behavior of .BR iswpunct () depends on the .B LC_CTYPE category of the current locale. .PP This function's name is a misnomer when dealing with Unicode characters, because the wide-character class "punct" contains both punctuation characters and symbol (math, currency, etc.) characters. .SH SEE ALSO .BR ispunct (3), .BR iswctype (3)