minix/lib/libc/arch/sparc64/gen/fpsetround.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

44 lines
858 B
C

/* $NetBSD: fpsetround.c,v 1.7 2013/10/28 01:06:36 mrg Exp $ */
/*
* Written by J.T. Conklin, Apr 10, 1995
* Public domain.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: fpsetround.c,v 1.7 2013/10/28 01:06:36 mrg Exp $");
#endif /* LIBC_SCCS and not lint */
#include "namespace.h"
#include <sys/types.h>
#include <ieeefp.h>
#ifdef __weak_alias
__weak_alias(fpsetround,_fpsetround)
#endif
fp_rnd
fpsetround(fp_rnd rnd_dir)
{
fp_rnd old;
fp_rnd new;
#ifdef SOFTFLOATSPARC64_FOR_GCC
extern fp_rnd _softfloat_float_rounding_mode;
#endif
__asm("st %%fsr,%0" : "=m" (*&old));
#ifdef SOFTFLOATSPARC64_FOR_GCC
_softfloat_float_rounding_mode = rnd_dir;
#endif
new = old;
new &= ~(0x03 << 30);
new |= ((rnd_dir & 0x03) << 30);
__asm("ld %0,%%fsr" : : "m" (*&new));
return ((uint32_t)old >> 30) & 0x03;
}