diff options
Diffstat (limited to 'sysdeps/arm/feupdateenv.c')
-rw-r--r-- | sysdeps/arm/feupdateenv.c | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/sysdeps/arm/feupdateenv.c b/sysdeps/arm/feupdateenv.c deleted file mode 100644 index 21afa51d4a..0000000000 --- a/sysdeps/arm/feupdateenv.c +++ /dev/null @@ -1,78 +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.h> -#include <fpu_control.h> -#include <arm-features.h> - - -int -__feupdateenv (const fenv_t *envp) -{ - fpu_control_t fpscr, new_fpscr, updated_fpscr; - int excepts; - - /* Fail if a VFP unit isn't present. */ - if (!ARM_HAVE_VFP) - return 1; - - _FPU_GETCW (fpscr); - excepts = fpscr & FE_ALL_EXCEPT; - - if ((envp != FE_DFL_ENV) && (envp != FE_NOMASK_ENV)) - { - /* Merge current exception flags with the saved fenv. */ - new_fpscr = envp->__cw | excepts; - - /* Write new FPSCR if different (ignoring NZCV flags). */ - if (((fpscr ^ new_fpscr) & ~_FPU_MASK_NZCV) != 0) - _FPU_SETCW (new_fpscr); - - /* Raise the exceptions if enabled in the new FP state. */ - if (excepts & (new_fpscr >> FE_EXCEPT_SHIFT)) - return __feraiseexcept (excepts); - - return 0; - } - - /* Preserve the reserved FPSCR flags. */ - new_fpscr = fpscr & (_FPU_RESERVED | FE_ALL_EXCEPT); - new_fpscr |= (envp == FE_DFL_ENV) ? _FPU_DEFAULT : _FPU_IEEE; - - if (((new_fpscr ^ fpscr) & ~_FPU_MASK_NZCV) != 0) - { - _FPU_SETCW (new_fpscr); - - /* Not all VFP architectures support trapping exceptions, so - test whether the relevant bits were set and fail if not. */ - _FPU_GETCW (updated_fpscr); - - if (new_fpscr & ~updated_fpscr) - return 1; - } - - /* Raise the exceptions if enabled in the new FP state. */ - if (excepts & (new_fpscr >> FE_EXCEPT_SHIFT)) - return __feraiseexcept (excepts); - - return 0; -} -libm_hidden_def (__feupdateenv) -weak_alias (__feupdateenv, feupdateenv) -libm_hidden_weak (feupdateenv) |