diff options
Diffstat (limited to 'ports/sysdeps/ia64/fpu/get-rounding-mode.h')
-rw-r--r-- | ports/sysdeps/ia64/fpu/get-rounding-mode.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/ports/sysdeps/ia64/fpu/get-rounding-mode.h b/ports/sysdeps/ia64/fpu/get-rounding-mode.h new file mode 100644 index 0000000000..1e184730e5 --- /dev/null +++ b/ports/sysdeps/ia64/fpu/get-rounding-mode.h @@ -0,0 +1,37 @@ +/* Return current rounding direction within libc. IA64 version. + Copyright (C) 1999-2012 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Christian Boissat <Christian.Boissat@cern.ch>, 1999. + + 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/>. */ + +#ifndef IA64_GET_ROUNDING_MODE_H +#define IA64_GET_ROUNDING_MODE_H 1 + +#include <fenv.h> + +/* Return the floating-point rounding mode. */ + +static inline int +get_rounding_mode (void) +{ + fenv_t fpsr; + + __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr)); + + return (fpsr >> 10) & 3; +} + +#endif /* get-rounding-mode.h */ |