projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 91650f79 | 1 | /* Store current floating-point environment. |
| f7a9f785 | 2 | Copyright (C) 1997-2016 Free Software Foundation, Inc. |
| 91650f79 UD |
3 | This file is part of the GNU C Library. |
| 4 | Contributed by Richard Henderson <rth@tamu.edu>, 1997 | |
| 5 | ||
| 6 | The GNU C Library is free software; you can redistribute it and/or | |
| 3214b89b AJ |
7 | modify it under the terms of the GNU Lesser General Public |
| 8 | License as published by the Free Software Foundation; either | |
| 9 | version 2.1 of the License, or (at your option) any later version. | |
| 91650f79 UD |
10 | |
| 11 | The GNU C Library is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 3214b89b | 14 | Lesser General Public License for more details. |
| 91650f79 | 15 | |
| 3214b89b | 16 | You should have received a copy of the GNU Lesser General Public |
| ab84e3ff PE |
17 | License along with the GNU C Library. If not, see |
| 18 | <http://www.gnu.org/licenses/>. */ | |
| 91650f79 | 19 | |
| c9bca511 | 20 | #include <fenv_libc.h> |
| 91650f79 | 21 | |
| 146bade7 UD |
22 | int |
| 23 | __fegetenv (fenv_t *envp) | |
| 91650f79 | 24 | { |
| 146bade7 UD |
25 | unsigned long int fpcr; |
| 26 | unsigned long int swcr; | |
| 91650f79 UD |
27 | |
| 28 | /* Get status from software and hardware. Note that we don't need an | |
| 29 | excb because the callsys is an implied trap barrier. */ | |
| 146bade7 UD |
30 | swcr = __ieee_get_fp_control (); |
| 31 | __asm__ __volatile__ ("mf_fpcr %0" : "=f" (fpcr)); | |
| 91650f79 | 32 | |
| c9bca511 UD |
33 | /* Merge the two bits of information. */ |
| 34 | *envp = ((fpcr & FPCR_ROUND_MASK) | (swcr & SWCR_ALL_MASK)); | |
| 146bade7 UD |
35 | |
| 36 | /* Success. */ | |
| 37 | return 0; | |
| 91650f79 | 38 | } |
| 60446d7a RM |
39 | |
| 40 | #include <shlib-compat.h> | |
| 41 | #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) | |
| 146bade7 | 42 | strong_alias (__fegetenv, __old_fegetenv) |
| 60446d7a RM |
43 | compat_symbol (libm, __old_fegetenv, fegetenv, GLIBC_2_1); |
| 44 | #endif | |
| 45 | ||
| 73a268c7 | 46 | libm_hidden_def (__fegetenv) |
| 60446d7a | 47 | versioned_symbol (libm, __fegetenv, fegetenv, GLIBC_2_2); |
| 3a808c3d | 48 | libm_hidden_ver(__fegetenv, fegetenv) |