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/*

FUNCTION

        <<isascii>>---ASCII character predicate

INDEX

        isascii

ANSI_SYNOPSIS

        #include <ctype.h>

        int isascii(int <[c]>);

TRAD_SYNOPSIS

        #include <ctype.h>

        int isascii(<[c]>);

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.

You can use a compiled subroutine instead of the macro definition by

undefining the macro using `<<#undef isascii>>'.

RETURNS

<<isascii>> returns non-zero if the low order byte of <[c]> is in the range

PORTABILITY

<<isascii>> is ANSI C.

No supporting OS subroutines are required.

*/

#include <_ansi.h>

#include <ctype.h>

#undef isascii

int

_DEFUN(isascii,(c),int c)

{

        return c >= 0 && c< 128;

}