/* Install given floating-point environment.
- Copyright (C) 1997-2013 Free Software Foundation, Inc.
+ Copyright (C) 1997-2019 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
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/>. */
+ <https://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
__fesetenv (const fenv_t *envp)
{
/* get the currently set exceptions. */
new.fenv = *envp;
- old.fenv = fegetenv_register ();
-
- /* 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[1] & _FPU_MASK_ALL) == 0 && (new.l[1] & _FPU_MASK_ALL) != 0)
- (void)__fe_nomask_env ();
+ old.fenv = fegetenv_control ();
- /* 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[1] & _FPU_MASK_ALL) != 0 && (new.l[1] & _FPU_MASK_ALL) == 0)
- (void)__fe_mask_env ();
+ __TEST_AND_EXIT_NON_STOP (old.l, new.l);
+ __TEST_AND_ENTER_NON_STOP (old.l, new.l);
- fesetenv_register (*envp);
+ fesetenv_register (new.fenv);
/* Success. */
return 0;
compat_symbol (libm, __old_fesetenv, fesetenv, GLIBC_2_1);
#endif
+libm_hidden_def (__fesetenv)
libm_hidden_ver (__fesetenv, fesetenv)
versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2);