mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-21 04:31:04 +08:00
2a072de4a1
* sysdeps/unix/sysv/linux/Makefile [$(subdir)=math] (sysdep_routines): Append setfpucw. (extra-objs): Append ieee-fpucw.o. (install-lib): Append libieee.a. (libieee.a): New target. * sysdeps/unix/sysv/linux/ieee-fpucw.c: New file. * sysdeps/unix/sysv/linux/i386/fpu_control.h (_FPU_GETCW, _FPU_SETCW): New macros. (fpu_control_t): New typedef. (__setfpucw): Use fpu_control_t for argument type. * sysdeps/unix/sysv/linux/fpu_control.c: Moved from linux/i386. * sysdeps/unix/sysv/linux/init-first.c: Moved from linux/i386. * sysdeps/unix/sysv/linux/Makefile [$(subdir)=math] (sysdep_routines): Append setfpucw. (extra-objs): Append ieee-fpucw.o. (install-lib): Append libieee.a. (libieee.a): New target. * sysdeps/unix/sysv/linux/ieee-fpucw.c: New file. * sysdeps/unix/sysv/linux/i386/fpu_control.h (_FPU_GETCW, _FPU_SETCW): New macros. (fpu_control_t): New typedef. (__setfpucw): Use fpu_control_t for argument type. * sysdeps/unix/sysv/linux/fpu_control.c: Moved from linux/i386. * sysdeps/unix/sysv/linux/init-first.c: Moved from linux/i386.
38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
/* Set the FPU control word.
|
|
Copyright (C) 1996 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include "fpu_control.h"
|
|
|
|
void
|
|
__setfpucw (fpu_control_t set)
|
|
{
|
|
fpu_control_t cw;
|
|
|
|
/* Fetch the current control word. */
|
|
_FPU_GETCW (cw);
|
|
|
|
/* Preserve the reserved bits, and set the rest as the user
|
|
specified (or the default, if the user gave zero). */
|
|
_FPU_SETCW ((cw & _FPU_RESERVED) | ((set ?: _FPU_DEFAULT) & ~_FPU_RESERVED));
|
|
}
|
|
|
|
/* The startup code in init-first.c calls __setfpucw (__fpu_control). */
|
|
|
|
fpu_control_t __fpu_control;
|