mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 14:30:06 +00:00
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/* FPU control word definitions. Stub version.
|
|
Copyright (C) 2000-2023 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _FPU_CONTROL_H
|
|
#define _FPU_CONTROL_H
|
|
|
|
#include <features.h>
|
|
|
|
/* These bits are reserved are not changed. */
|
|
#define _FPU_RESERVED 0x0707FFFC
|
|
|
|
/* The fdlibm code requires no interrupts for exceptions. Don't
|
|
change the rounding mode, it would break long double I/O! */
|
|
#define _FPU_DEFAULT 0x00000000 /* Default value. */
|
|
|
|
/* Type of the control word. */
|
|
typedef unsigned int fpu_control_t;
|
|
|
|
/* Macros for accessing the hardware control word. */
|
|
#define _FPU_GETCW(cw) __asm__ __volatile__ ("efpc %0,0" : "=d" (cw))
|
|
#define _FPU_SETCW(cw) __asm__ __volatile__ ("sfpc %0,0" : : "d" (cw))
|
|
|
|
/* Default control word set at startup. */
|
|
extern fpu_control_t __fpu_control;
|
|
|
|
#endif /* _FPU_CONTROL_H */
|