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/* Set current rounding direction.
Copyright (C) 2004-2012 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.h>
#include <fpu_control.h>
#include <arm-features.h>
int
fesetround (int round)
{
if (ARM_HAVE_VFP)
{
fpu_control_t temp;
switch (round)
{
case FE_TONEAREST:
case FE_UPWARD:
case FE_DOWNWARD:
case FE_TOWARDZERO:
_FPU_GETCW (temp);
temp = (temp & ~FE_TOWARDZERO) | round;
_FPU_SETCW (temp);
return 0;
default:
return 1;
}
}
else if (round == FE_TONEAREST)
/* This is the only supported rounding mode for soft-fp. */
return 0;
/* Unsupported, so fail. */
return 1;
}
libm_hidden_def (fesetround)
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