diff options
Diffstat (limited to 'sysdeps/powerpc/fpu/feupdateenv.c')
| -rw-r--r-- | sysdeps/powerpc/fpu/feupdateenv.c | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/sysdeps/powerpc/fpu/feupdateenv.c b/sysdeps/powerpc/fpu/feupdateenv.c deleted file mode 100644 index 551cc1734d..0000000000 --- a/sysdeps/powerpc/fpu/feupdateenv.c +++ /dev/null @@ -1,68 +0,0 @@ -/* Install given floating-point environment and raise exceptions. - Copyright (C) 1997-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 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> -#include <fpu_control.h> - -#define _FPU_MASK_ALL (_FPU_MASK_ZM | _FPU_MASK_OM | _FPU_MASK_UM | _FPU_MASK_XM | _FPU_MASK_IM) - -int -__feupdateenv (const fenv_t *envp) -{ - fenv_union_t old, new; - - /* Save the currently set exceptions. */ - new.fenv = *envp; - old.fenv = fegetenv_register (); - - /* Restore rounding mode and exception enable from *envp and merge - exceptions. Leave fraction rounded/inexact and FP result/CC bits - unchanged. */ - new.l = (old.l & 0xffffffff1fffff00LL) | (new.l & 0x1ff80fff); - - /* If the old env has no enabled exceptions and the new env has any enabled - exceptions, then unmask SIGFPE in the MSR FE0/FE1 bits. This will put - the hardware into "precise mode" and may cause the FPU to run slower on - some hardware. */ - if ((old.l & _FPU_MASK_ALL) == 0 && (new.l & _FPU_MASK_ALL) != 0) - (void) __fe_nomask_env_priv (); - - /* If the old env had any enabled exceptions and the new env has no enabled - exceptions, then mask SIGFPE in the MSR FE0/FE1 bits. This may allow the - FPU to run faster because it always takes the default action and can not - generate SIGFPE. */ - if ((old.l & _FPU_MASK_ALL) != 0 && (new.l & _FPU_MASK_ALL) == 0) - (void)__fe_mask_env (); - - /* Atomically enable and raise (if appropriate) exceptions set in `new'. */ - fesetenv_register (new.fenv); - - /* Success. */ - return 0; -} - -#include <shlib-compat.h> -#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) -strong_alias (__feupdateenv, __old_feupdateenv) -compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1); -#endif - -libm_hidden_def (__feupdateenv) -libm_hidden_ver (__feupdateenv, feupdateenv) -versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2); |