/*
 * have_offscl - determine if have a scalar off_t element
 *
 * usage:
 *	have_offscl
 *
 * On some systems, off_t is a scalar value on which one can perform
 * arithmetic operations, assignments and comparisons.  On some systems
 * off_t is some sort of union or struct which must be converted into
 * a ZVALUE in order to perform arithmetic operations, assignments and
 * comparisons.
 *
 *
 * This prog outputs several defines:
 *
 *	HAVE_OFF_T_SCALAR
 *		defined ==> ok to perform arithmetic ops, = and comparisons
 *		undefined ==> convert to ZVALUE first
 */
/*
 * Copyright (c) 1996 by Landon Curt Noll.  All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software and
 * its documentation for any purpose and without fee is hereby granted,
 * provided that the above copyright, this permission notice and text
 * this comment, and the disclaimer below appear in all of the following:
 *
 *	supporting documentation
 *	source copies
 *	source works derived from this source
 *	binaries derived from this source or from derived source
 *
 * LANDON CURT NOLL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
 * EVENT SHALL LANDON CURT NOLL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
 * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
 * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 *
 * chongo was here	/\../\
 */

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>

int
main(void)
{
#if !defined(OFF_T_NON_SCALAR)
	off_t value;	/* an off_t to perform arithmatic on */
	off_t value2;	/* an off_t to perform arithmatic on */

	/*
	 * do some math opts on an off_t
	 */
	value = (off_t)getpid();
	value2 = (off_t)-1;
	if (value > (off_t)1) {
		--value;
	}
	if (value <= (off_t)getppid()) {
		--value;
	}
	if (value == value2) {
		value += value2;
	}
	value <<= 1;
	if (!value) {
		printf("/* something for the off_t to do */\n");
	}

	/*
	 * report off_t as a scalar
	 */
	printf("#undef HAVE_OFF_T_SCALAR\n");
	printf("#define HAVE_OFF_T_SCALAR /* off_t is a simple value */\n");
#else
	printf("#undef HAVE_OFF_T_SCALAR /* off_t is not a simple value */\n");
#endif
	/* exit(0); */
	return 0;
}