Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

wctype(3) [mojave man page]

WCTYPE(3)						   BSD Library Functions Manual 						 WCTYPE(3)

iswctype, iswctype_l, wctype, wctype_l -- wide character class functions LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <wctype.h> int iswctype(wint_t wc, wctype_t charclass); wctype_t wctype(const char *property); #include <wctype.h> #include <xlocale.h> int iswctype_l(wint_t wc, wctype_t charclass, locale_t loc); wctype_t wctype_l(const char *property, locale_t loc); DESCRIPTION
The wctype() function returns a value of type wctype_t, which represents the requested wide character class and may be used as the second argument for calls to iswctype(). The following character class names are recognised: alnum cntrl ideogram print space xdigit alpha digit lower punct special blank graph phonogram rune upper The iswctype() function checks whether the wide character wc is in the character class charclass. Although the iswctype() and wctype() functions use the current locale, the iswctype_l() and wctype_l() functions may be passed locales directly. See xlocale(3) for more information. RETURN VALUES
The iswctype() function returns non-zero if and only if wc has the property described by charclass, or charclass is zero. The wctype() function returns 0 if property is invalid; otherwise, it returns a value of type wctype_t that can be used in subsequent calls to iswctype(). EXAMPLES
Reimplement iswalpha(3) in terms of iswctype() and wctype(): int myiswalpha(wint_t wc) { return (iswctype(wc, wctype("alpha"))); } SEE ALSO
ctype(3), nextwctype(3), xlocale(3) STANDARDS
The iswctype() and wctype() functions conform to IEEE Std 1003.1-2001 (``POSIX.1''). The ``ideogram'', ``phonogram'', ``special'', and ``rune'' character classes are extensions. HISTORY
The iswctype() and wctype() functions first appeared in FreeBSD 5.0. BSD
March 27, 2004 BSD

Check Out this Related Man Page

iswctype(3C)						   Standard C Library Functions 					      iswctype(3C)

iswctype - test character for specified class SYNOPSIS
#include <wchar.h> int iswctype(wint_t wc, wctype_t charclass); DESCRIPTION
The iswctype() function determines whether the wide-character code wc has the character class charclass, returning TRUE or FALSE. The iswc- type() function is defined on WEOF and wide-character codes corresponding to the valid character encodings in the current locale. If the wc argument is not in the domain of the function, the result is undefined. If the value of charclass is invalid (that is, not obtained by a call to wctype(3C) or charclass is invalidated by a subsequent call to setlocale(3C) that has affected category LC_CTYPE), the result is indeterminate. RETURN VALUES
The iswctype() function returns 0 for FALSE and non-zero for TRUE. USAGE
There are twelve strings that are reserved for the standard character classes: | | "alnum" |"alpha" | "blank" "cntrl" |"digit" | "graph" "lower" |"print" | "punct" "space" |"upper" | "xdigit" In the table below, the functions in the left column are equivalent to the functions in the right column. iswalnum(wc) iswctype(wc, wctype("alnum")) iswalpha(wc) iswctype(wc, wctype("alpha")) iswcntrl(wc) iswctype(wc, wctype("cntrl")) iswdigit( wc) iswctype(wc, wctype("digit")) iswgraph(wc) iswctype(wc, wctype("graph")) iswlower(wc) iswctype(wc, wctype("lower")) iswprint(wc) iswctype(wc, wctype("print")) iswpunct(wc) iswctype( wc, wctype("punct")) iswspace(wc) iswctype(wc, wctype("space")) iswupper(wc) iswctype(wc, wctype("upper")) iswxdigit(wc) iswctype(wc, wctype("xdigit")) The call iswctype(wc, wctype("blank")) does not have an equivalent isw*() function. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe with exceptions | +-----------------------------+-----------------------------+ SEE ALSO
iswalpha(3C), setlocale(3C), wctype(3C), attributes(5), environ(5), standards(5) SunOS 5.10 24 Jul 2002 iswctype(3C)

Featured Tech Videos