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Diffstat (limited to 'sysdeps/arm/feholdexcpt.c')
-rw-r--r-- | sysdeps/arm/feholdexcpt.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/sysdeps/arm/feholdexcpt.c b/sysdeps/arm/feholdexcpt.c new file mode 100644 index 0000000000..9ca673c6fb --- /dev/null +++ b/sysdeps/arm/feholdexcpt.c @@ -0,0 +1,50 @@ +/* Store current floating-point environment and clear exceptions. + Copyright (C) 1997-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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 +feholdexcept (fenv_t *envp) +{ + if (ARM_HAVE_VFP) + { + unsigned long int temp; + + /* Store the environment. */ + _FPU_GETCW(temp); + envp->__cw = temp; + + /* Now set all exceptions to non-stop. */ + temp &= ~(FE_ALL_EXCEPT << FE_EXCEPT_SHIFT); + + /* And clear all exception flags. */ + temp &= ~FE_ALL_EXCEPT; + + _FPU_SETCW(temp); + + return 0; + } + + /* Unsupported, so fail. */ + return 1; +} + +libm_hidden_def (feholdexcept) |