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/*
FUNCTION
<<iswdigit>>, <<iswdigit_l>>---decimal digit wide character test
INDEX
iswdigit
INDEX
iswdigit_l
SYNOPSIS
#include <wctype.h>
int iswdigit(wint_t <[c]>);
#include <wctype.h>
int iswdigit_l(wint_t <[c]>, locale_t <[locale]>);
DESCRIPTION
<<iswdigit>> is a function which classifies wide-character values that
are decimal digits.
<<iswdigit_l>> is like <<iswdigit>> but performs the check based on the
locale specified by the locale object locale. If <[locale]> is
LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
RETURNS
<<iswdigit>>, <<iswdigit_l>> return non-zero if <[c]> is a decimal digit wide character.
PORTABILITY
<<iswdigit>> is C99.
<<iswdigit_l>> is POSIX-1.2008.
No supporting OS subroutines are required.
*/
#include <_ansi.h>
#include <wctype.h>
int
iswdigit (wint_t c)
{
return c >= (wint_t)'0' && c <= (wint_t)'9';
// category (c) == CAT_Nd not to be included as of C-99
}
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