diff options
Diffstat (limited to 'sysdeps/alpha/fpu/fegetenv.c')
| -rw-r--r-- | sysdeps/alpha/fpu/fegetenv.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/sysdeps/alpha/fpu/fegetenv.c b/sysdeps/alpha/fpu/fegetenv.c new file mode 100644 index 0000000000..ef688f20a3 --- /dev/null +++ b/sysdeps/alpha/fpu/fegetenv.c @@ -0,0 +1,47 @@ +/* Store current floating-point environment. + Copyright (C) 1997-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson <rth@tamu.edu>, 1997 + + 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_libc.h> + +int +__fegetenv (fenv_t *envp) +{ + unsigned long int fpcr; + unsigned long int swcr; + + /* Get status from software and hardware. Note that we don't need an + excb because the callsys is an implied trap barrier. */ + swcr = __ieee_get_fp_control (); + __asm__ __volatile__ ("mf_fpcr %0" : "=f" (fpcr)); + + /* Merge the two bits of information. */ + *envp = ((fpcr & FPCR_ROUND_MASK) | (swcr & SWCR_ALL_MASK)); + + /* Success. */ + return 0; +} + +#include <shlib-compat.h> +#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) +strong_alias (__fegetenv, __old_fegetenv) +compat_symbol (libm, __old_fegetenv, fegetenv, GLIBC_2_1); +#endif + +versioned_symbol (libm, __fegetenv, fegetenv, GLIBC_2_2); +libm_hidden_ver(__fegetenv, fegetenv) |