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