diff options
Diffstat (limited to 'sysdeps/x86_64/fpu/fesetround.c')
| -rw-r--r-- | sysdeps/x86_64/fpu/fesetround.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/sysdeps/x86_64/fpu/fesetround.c b/sysdeps/x86_64/fpu/fesetround.c deleted file mode 100644 index 939297252a..0000000000 --- a/sysdeps/x86_64/fpu/fesetround.c +++ /dev/null @@ -1,48 +0,0 @@ -/* Set current rounding direction. - Copyright (C) 2001-2017 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> - -int -__fesetround (int round) -{ - unsigned short int cw; - int mxcsr; - - if ((round & ~0xc00) != 0) - /* ROUND is no valid rounding mode. */ - return 1; - - /* First set the x87 FPU. */ - asm ("fnstcw %0" : "=m" (*&cw)); - cw &= ~0xc00; - cw |= round; - asm ("fldcw %0" : : "m" (*&cw)); - - /* And now the MSCSR register for SSE, the precision is at different bit - positions in the different units, we need to shift it 3 bits. */ - asm ("stmxcsr %0" : "=m" (*&mxcsr)); - mxcsr &= ~ 0x6000; - mxcsr |= round << 3; - asm ("ldmxcsr %0" : : "m" (*&mxcsr)); - - return 0; -} -libm_hidden_def (__fesetround) -weak_alias (__fesetround, fesetround) -libm_hidden_weak (fesetround) |