?RCS: $Id$
?RCS:
?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi
?RCS:
?RCS: You may redistribute only under the terms of the Artistic License,
?RCS: as specified in the README file that comes with the distribution.
?RCS: You may reuse parts of this distribution only within the terms of
?RCS: that same Artistic License; a copy of which may be found at the root
?RCS: of the source tree for dist 4.0.
?RCS:
?RCS: Original Author: Andy Dougherty <doughera@lafcol.lafayette.edu>
?RCS:
?RCS: $Log: d_casti32.U,v $
?RCS: Revision 3.0.1.3  1995/05/12  12:10:45  ram
?RCS: patch54: made sure cc and ccflags are conditional dependencies
?RCS:
?RCS: Revision 3.0.1.2  1994/10/29  16:09:37  ram
?RCS: patch36: declare signal handler correctly (ADO)
?RCS:
?RCS: Revision 3.0.1.1  1994/08/29  16:07:06  ram
?RCS: patch32: created by ADO
?RCS:
?X:
?X:	Can the compiler cast large floats to 32-bit integers?
?X:
?MAKE:d_casti32: cat +cc +ccflags rm_try intsize Setvar test signal_t
?MAKE:	-pick add $@ %<
?S:d_casti32:
?S:	This variable conditionally defines CASTI32, which indicates
?S:	whether the C compiler can cast large floats to 32-bit ints.
?S:.
?C:CASTI32:
?C:	This symbol is defined if the C compiler can cast negative
?C:	or large floating point numbers to 32-bit ints.
?C:.
?T:xxx yyy
?H:#$d_casti32	CASTI32		/**/
?H:.
?F:!try
?LINT:set d_casti32
: check for ability to cast large floats to 32-bit ints.
echo " "
echo 'Checking whether your C compiler can cast large floats to int32.' >&4
if $test "$intsize" -eq 4; then
	xxx=int
else
	xxx=long
fi
$cat >try.c <<EOCP
#include <sys/types.h>
#include <signal.h>
$signal_t blech() { exit(3); }
int main()
{
	$xxx i32;
	double f;
	int result = 0;
	signal(SIGFPE, blech);

	f = (double) 0x7fffffff;
	f = 10 * f;
	i32  = ($xxx) f;

	if (i32 != ($xxx) f)
		result |= 1;
	exit(result);
}
EOCP
if $cc $ccflags -o try try.c >/dev/null 2>&1; then
	./try
	yyy=$?
else
	echo "(I can't seem to compile the test program--assuming it can't)"
	yyy=1
fi
case "$yyy" in
0)	val="$define"
	echo "Yup, it can."
	;;
*)	val="$undef"
	echo "Nope, it can't."
	;;
esac
set d_casti32
eval $setvar
$rm_try

