iswcntrl: test na kontrolu širokého charakteru

Originální popis anglicky: iswcntrl - test for control wide character

Návod, kniha: Linux Programmer's Manual

STRUČNĚ

#include <wctype.h>
 
int iswcntrl(wint_t wc);

POPIS / INSTRUKCE

The iswcntrl function is the wide-character equivalent of the iscntrl function. It tests whether wc is a wide character belonging to the wide character class "cntrl". The wide character class "cntrl" is disjoint from the wide character class "print" and therefore also disjoint from its subclasses "graph", "alpha", "upper", "lower", "digit", "xdigit", "punct". For an unsigned char c, iscntrl(c) implies iswcntrl(btowc(c)), but not vice versa.

NÁVRATOVÁ HODNOTA

The iswcntrl function returns non-zero if wc is a wide character belonging to the wide character class "cntrl". Otherwise it returns zero.

ODPOVÍDAJÍCÍ

ISO/ANSI C, UNIX98

SOUVISEJÍCÍ

iscntrl(3), iswctype(3)

NOTES

The behaviour of iswcntrl depends on the LC_CTYPE category of the current locale.