/usr/s390x-linux-gnu/include/fpu_control.h is in libc6-dev-s390x-cross 2.27-3ubuntu1cross1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | /* FPU control word definitions. Stub version.
Copyright (C) 2000-2018 Free Software Foundation, Inc.
Contributed by Denis Joseph Barrow (djbarrow@de.ibm.com) and
Martin Schwidefsky (schwidefsky@de.ibm.com).
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/>. */
#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 */
|