glibc/sysdeps/arm/fesetround.c
Wilco b5570d92d6 Add _FPU_MASK_RM and use it instead of FE_TOWARDZERO.
2014-06-24  Wilco  <wdijkstr@arm.com>

	* sysdeps/arm/fpu_control.h (_FPU_MASK_RM): Define.
	* sysdeps/arm/fenv_private.h (libc_fesetround_vfp)
	(libc_feholdexcept_setround_vfp) (libc_feholdsetround_vfp)
	(libc_feresetround_vfp) (libc_feholdsetround_vfp_ctx)
	(libc_feresetround_vfp_ctx): Use _FPU_MASK_RM.
	* sysdeps/arm/fesetround.c (fesetround): Use _FPU_MASK_RM.
	* sysdeps/arm/get-rounding-mode.h (get_rounding_mode):
	Use _FPU_MASK_RM.
2014-06-24 15:02:51 +00:00

38 lines
1.2 KiB
C

/* Set current rounding direction.
Copyright (C) 2004-2014 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <fenv_private.h>
#include <arm-features.h>
int
fesetround (int round)
{
/* FE_TONEAREST is the only supported rounding mode
if a VFP unit isn't present. */
if (!ARM_HAVE_VFP)
return (round == FE_TONEAREST) ? 0 : 1;
if (round & ~_FPU_MASK_RM)
return 1;
libc_fesetround_vfp (round);
return 0;
}
libm_hidden_def (fesetround)