diff options
Diffstat (limited to 'REORG.TODO/sysdeps/i386/fpu/fgetexcptflg.c')
-rw-r--r-- | REORG.TODO/sysdeps/i386/fpu/fgetexcptflg.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/i386/fpu/fgetexcptflg.c b/REORG.TODO/sysdeps/i386/fpu/fgetexcptflg.c new file mode 100644 index 0000000000..954e5f69d8 --- /dev/null +++ b/REORG.TODO/sysdeps/i386/fpu/fgetexcptflg.c @@ -0,0 +1,57 @@ +/* Store current representation for 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 <unistd.h> +#include <ldsodefs.h> +#include <dl-procinfo.h> + + +int +__fegetexceptflag (fexcept_t *flagp, int excepts) +{ + fexcept_t temp; + + /* Get the current exceptions. */ + __asm__ ("fnstsw %0" : "=m" (*&temp)); + + *flagp = temp & excepts & FE_ALL_EXCEPT; + + /* If the CPU supports SSE, we clear the MXCSR as well. */ + if (HAS_CPU_FEATURE (SSE)) + { + unsigned int sse_exc; + + /* Get the current MXCSR. */ + __asm__ ("stmxcsr %0" : "=m" (*&sse_exc)); + + *flagp |= sse_exc & excepts & FE_ALL_EXCEPT; + } + + /* Success. */ + return 0; +} + +#include <shlib-compat.h> +#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) +strong_alias (__fegetexceptflag, __old_fegetexceptflag) +compat_symbol (libm, __old_fegetexceptflag, fegetexceptflag, GLIBC_2_1); +#endif + +versioned_symbol (libm, __fegetexceptflag, fegetexceptflag, GLIBC_2_2); |