Section (3) iswpunct
iswpunct — test for punctuation or symbolic wide character
iswpunct() function is
the wide-character equivalent of the ispunct(3) function. It
wc is a
wide character belonging to the wide-character class
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.
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.
Being a subclass of the wide-character class print, the wide-character class punct is disjoint from the wide-character class cntrl.
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.
returns nonzero if
is a wide-character belonging to the wide-character class
punct. Otherwise, it returns zero.
For an explanation of the terms used in this section, see attributes(7).
||Thread safety||MT-Safe locale|
The behavior of
depends on the
category of the current locale.
This function_zsingle_quotesz_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.
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GNU glibc-2 source code and manual
Dinkumware C library reference http://www.dinkumware.com/
OpenGroup_zsingle_quotesz_s Single UNIX specification http://www.UNIX-systems.org/online.html