From a66161f44853403b2cf464de08753d4b5aa6d2dd Mon Sep 17 00:00:00 2001 From: Natanael Copa Date: Thu, 25 Apr 2013 11:28:37 +0000 Subject: [PATCH] libm/x86_64: implement fegetround --- libm/x86_64/fegetround.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 libm/x86_64/fegetround.c diff --git a/libm/x86_64/fegetround.c b/libm/x86_64/fegetround.c new file mode 100644 index 0000000..8ae0c3a --- /dev/null +++ b/libm/x86_64/fegetround.c @@ -0,0 +1,31 @@ +/* Return current rounding direction. + Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper , 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include + +int +fegetround (void) +{ + int cw; + + __asm__ ("fnstcw %0" : "=m" (*&cw)); + + return cw & 0xc00; +} -- 1.8.2.1