1 /* FPU control word definitions. Stub version. 2 Copyright (C) 1996-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #ifndef _FPU_CONTROL_H 20 #define _FPU_CONTROL_H 21 22 #define _FPU_RESERVED 0xffffffff /* These bits are reserved and not changed. */ 23 24 /* The fdlibm code requires no interrupts for exceptions. Don't 25 change the rounding mode, it would break long double I/O! */ 26 #define _FPU_DEFAULT 0x00000000 /* Default value. */ 27 28 /* Type of the control word. */ 29 typedef unsigned int fpu_control_t; 30 31 /* Macros for accessing the hardware control word. */ 32 #define _FPU_GETCW(cw) (cw) = 0 33 #define _FPU_SETCW(cw) (void) (cw) 34 35 /* Default control word set at startup. */ 36 extern fpu_control_t __fpu_control; 37 38 #endif /* _FPU_CONTROL_H */ 39