iswdigit()

Test for a decimal digit

Synopsis:

#include <wctype.h>

int iswdigit( wint_t wc );

Library:

libc

Description:

The iswdigit() function tests if the argument wc is a decimal digit wide character of the class digit. In the C locale, they are: 0 to 9.

Returns:

=/= 0: The character is a member of the class digit.
0: Everything else.

Classification:

Safety:
Cancellation point	No
Interrupt handler	Yes
Signal handler	Yes
Thread	Yes

Caveats:

The result is valid only for char arguments and WEOF.

See also:

"Character manipulation functions" and "Wide-character functions" in the summary of functions chapter.