wctype()
QNX SDP8.0C Library ReferenceAPIDeveloper
Define a wide-character class
Synopsis:
#include <wctype.h>
wctype_t wctype( const char * property );
Arguments:
- property
- A string that defines the property of the class; see below.
Library:
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
Description:
The wctype() function determines a classification rule for wide-character codes according to the category LC_CTYPE, particularly for use with iswctype().
Some classes are defined in all locales, although additional classes may be defined for LC_CTYPE. Use setlocale() to modify the category LC_CTYPE.
Defined Classes:
- alnum
- alpha
- blank
- cntrl
- digit
- graph
- lower
- punct
- space
- upper
- xdigit
Returns:
A wctype_t object that you can use in a call to iswctype(), or 0 if the character class name isn't valid for the current locale.
Classification:
Safety: | |
---|---|
Cancellation point | No |
Signal handler | Yes |
Thread | Yes |
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