minix/lib/libm/src/s_fmaxl.c
Lionel Sambuc 84d9c625bf Synchronize on NetBSD-CVS (2013/12/1 12:00:00 UTC)
- Fix for possible unset uid/gid in toproto
 - Fix for default mtree style
 - Update libelf
 - Importing libexecinfo
 - Resynchronize GCC, mpc, gmp, mpfr
 - build.sh: Replace params with show-params.
     This has been done as the make target has been renamed in the same
     way, while a new target named params has been added. This new
     target generates a file containing all the parameters, instead of
     printing it on the console.
 - Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
     get getservbyport() out of the inner loop

Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
2014-07-28 17:05:06 +02:00

63 lines
2.3 KiB
C

/*-
* Copyright (c) 2004 David Schultz <das@FreeBSD.ORG>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: s_fmaxl.c,v 1.4 2013/11/29 22:16:10 joerg Exp $");
#ifdef notdef
__FBSDID("$FreeBSD: src/lib/msun/src/s_fmaxl.c,v 1.1 2004/06/30 07:04:01 das Exp $");
#endif
#include <string.h>
#include <math.h>
#include <machine/ieee.h>
#ifdef __HAVE_LONG_DOUBLE
long double
fmaxl(long double x, long double y)
{
union ieee_ext_u u[2];
memset(&u, 0, sizeof u);
u[0].extu_ld = x;
u[0].extu_ext.ext_frach &= ~0x80000000;
u[1].extu_ld = y;
u[1].extu_ext.ext_frach &= ~0x80000000;
/* Check for NaNs to avoid raising spurious exceptions. */
if (u[0].extu_ext.ext_exp == EXT_EXP_INFNAN &&
(u[0].extu_ext.ext_frach | u[0].extu_ext.ext_fracl) != 0)
return (y);
if (u[1].extu_ext.ext_exp == EXT_EXP_INFNAN &&
(u[1].extu_ext.ext_frach | u[1].extu_ext.ext_fracl) != 0)
return (x);
/* Handle comparisons of ext_signed zeroes. */
if (u[0].extu_ext.ext_sign != u[1].extu_ext.ext_sign)
return (u[0].extu_ext.ext_sign ? y : x);
return (x > y ? x : y);
}
#endif