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/*
FUNCTION
<<isascii>>, <<isascii_l>>---ASCII character predicate
INDEX
isascii
INDEX
isascii_l
SYNOPSIS
#include <ctype.h>
int isascii(int <[c]>);
#include <ctype.h>
int isascii_l(int <[c]>, locale_t <[locale]>);
DESCRIPTION
<<isascii>> is a macro which returns non-zero when <[c]> is an ASCII
character, and 0 otherwise. It is defined for all integer values.
<<isascii_l>> is like <<isascii>> 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 isascii>>' or `<<#undef isascii_l>>'.
RETURNS
<<isascii>>, <<isascii_l>> return non-zero if the low order byte of <[c]>
is in the range 0 to 127 (<<0x00>>--<<0x7F>>).
PORTABILITY
<<isascii>> is ANSI C.
<<isascii_l>> is a GNU extension.
No supporting OS subroutines are required.
*/
#include <_ansi.h>
#include <ctype.h>
#undef isascii
int
isascii (int c)
{
return c >= 0 && c< 128;
}
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