diff options
Diffstat (limited to 'ports/sysdeps/hppa/fpu/fesetround.c')
-rw-r--r-- | ports/sysdeps/hppa/fpu/fesetround.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/ports/sysdeps/hppa/fpu/fesetround.c b/ports/sysdeps/hppa/fpu/fesetround.c new file mode 100644 index 0000000000..d7acab2668 --- /dev/null +++ b/ports/sysdeps/hppa/fpu/fesetround.c @@ -0,0 +1,40 @@ +/* Set current rounding direction. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by David Huggins-Daines <dhd@debian.org>, 2000 + + 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> + +int +fesetround (int round) +{ + union { unsigned long long l; unsigned int sw[2]; } s; + + if (round & ~FE_DOWNWARD) + /* round is not a valid rounding mode. */ + return 1; + + /* Get the current status word. */ + __asm__ ("fstd %%fr0,0(%1)" : "=m" (s.l) : "r" (&s.l) : "%r0"); + s.sw[0] &= ~FE_DOWNWARD; + s.sw[0] |= round & FE_DOWNWARD; + __asm__ ("fldd 0(%0),%%fr0" : : "r" (&s.l), "m" (s.l) : "%r0"); + + return 0; +} + +libm_hidden_def (fesetround) |