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/*
FUNCTION
<<ispunct>>, <<ispunct_l>>---punctuation character predicate
INDEX
ispunct
INDEX
ispunct_l
SYNOPSIS
#include <ctype.h>
int ispunct(int <[c]>);
#include <ctype.h>
int ispunct_l(int <[c]>, locale_t <[locale]>);
DESCRIPTION
<<ispunct>> is a macro which classifies singlebyte charset values by table
lookup. It is a predicate returning non-zero for printable
punctuation characters, and 0 for other characters. It is defined only
if <[c]> is representable as an unsigned char or if <[c]> is EOF.
<<ispunct_l>> is like <<ispunct>> 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.
You can use a compiled subroutine instead of the macro definition by
undefining the macro using `<<#undef ispunct>>' or `<<#undef ispunct_l>>'.
RETURNS
<<ispunct>>, <<ispunct_l>> return non-zero if <[c]> is a printable
punctuation character.
PORTABILITY
<<ispunct>> is ANSI C.
<<ispunct_l>> is POSIX-1.2008.
No supporting OS subroutines are required.
*/
#include <_ansi.h>
#include <ctype.h>
#undef ispunct
int
ispunct (int c)
{
return(__CTYPE_PTR[c+1] & _P);
}
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