iswalnum(), iswalnum_l

tests if wide character is alphanumeric 

Function

SYNOPSIS

#include <wctype.h>

int iswalnum(wint_t wc);

int iswalnum_l(wint_t wc, locale_t locale);

DESCRIPTION

The iswalnum() and iswalnum_l() function tests for any wide character for which iswalpha() or iswalpha_l() or iswdigit() iswdigit_l() is true.

The behavior of the iswalnum() function is affected by the current locale. To modify the behavior, change the LC_CTYPE category in setlocale(), that is , setlocale(LC_CTYPE, newlocale).

iswalnum_l() behaves in the same way as iswalnum() without the _l suffix, but uses the specified locale rather than the global or per-thread locale. A locale_t is returned by newlocale().

PARAMETERS

wc 

Is a wide character code corresponding to a valid character in the current locale or the value of the macro WEOF.

locale 

Is a locale_t perhaps returned by newlocale() or LC_GLOBAL_LOCALE or 0 for the current thread locale set with uselocale().

RETURN VALUES

The iswalnum() and iswalnum_() functions return non-zero for true and zero for false. If the parameter is not in the domain of the function, the behavior is undefined.

CONFORMANCE

ANSI/ISO 9899-1990/AM 1-1995.

MULTITHREAD SAFETY LEVEL

MT-Safe, with exceptions.

The function iswalnum() is MT-Safe as long as no thread calls setlocale() while this function is executing.

The function iswalnum_l() is MT-Safe as long as no thread calls newlocale() on locale while this function is executing.

PORTING ISSUES

None.

AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Professional Developers 64-Bit Edition
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition

SEE ALSO

Functions:
iswalpha(), iswcntrl(), iswdigit(), iswgraph(), iswlower(), iswprint(), iswpunct(), iswspace(), iswupper(), iswxdigit(), setlocale()

PTC MKS Toolkit 10.5 Documentation Build 40.