diff options
Diffstat (limited to 'gnulib/import/fpucw.h')
| -rw-r--r-- | gnulib/import/fpucw.h | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/gnulib/import/fpucw.h b/gnulib/import/fpucw.h index 05ee0ca..91a1cbe 100644 --- a/gnulib/import/fpucw.h +++ b/gnulib/import/fpucw.h @@ -1,5 +1,5 @@ /* Manipulating the FPU control word. -*- coding: utf-8 -*- - Copyright (C) 2007-2016 Free Software Foundation, Inc. + Copyright (C) 2007-2019 Free Software Foundation, Inc. Written by Bruno Haible <bruno@clisp.org>, 2007. This program is free software: you can redistribute it and/or modify @@ -13,7 +13,7 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. */ + along with this program. If not, see <https://www.gnu.org/licenses/>. */ #ifndef _FPUCW_H #define _FPUCW_H @@ -35,15 +35,15 @@ The FPU control word is under control of the application, i.e. it is not required to be set either way by the ABI. (In fact, the i386 ABI - http://refspecs.freestandards.org/elf/abi386-4.pdf page 3-12 = page 38 + https://www.linux-mips.org/pub/linux/mips/doc/ABI/abi386-4.pdf page 3-12 = page 38 is not clear about it. But in any case, gcc treats the control word like a "preserved" register: it emits code that assumes that the control word is preserved across calls, and it restores the control word at the end of functions that modify it.) - See Vincent Lefèvre's page http://www.vinc17.org/research/extended.en.html + See Vincent Lefèvre's page https://www.vinc17.net/research/extended.en.html for a good explanation. - See http://www.uwsg.iu.edu/hypermail/linux/kernel/0103.0/0453.html for + See https://web.archive.org/web/20060905133417/http://www.uwsg.iu.edu/hypermail/linux/kernel/0103.0/0453.html some argumentation which setting should be the default. */ /* This header file provides the following facilities: @@ -70,12 +70,12 @@ typedef unsigned short fpucw_t; /* glibc calls this fpu_control_t */ # define FPU_PC_DOUBLE 0x200 /* glibc calls this _FPU_DOUBLE */ # define FPU_PC_EXTENDED 0x300 /* glibc calls this _FPU_EXTENDED */ -# define GET_FPUCW() \ +# define GET_FPUCW() __extension__ \ ({ fpucw_t _cw; \ __asm__ __volatile__ ("fnstcw %0" : "=m" (*&_cw)); \ _cw; \ }) -# define SET_FPUCW(word) \ +# define SET_FPUCW(word) __extension__ \ (void)({ fpucw_t _ncw = (word); \ __asm__ __volatile__ ("fldcw %0" : : "m" (*&_ncw)); \ }) |