1 /* Install given floating-point control modes. S/390 version. 2 Copyright (C) 2016-2021 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 #include <fenv.h> 20 #include <fpu_control.h> 21 #include <fenv_libc.h> 22 23 #define FPC_STATUS (FPC_FLAGS_MASK | FPC_DXC_MASK) 24 25 int fesetmode(const femode_t * modep)26fesetmode (const femode_t *modep) 27 { 28 fpu_control_t fpc; 29 30 _FPU_GETCW (fpc); 31 fpc &= FPC_STATUS; 32 if (modep == FE_DFL_MODE) 33 fpc |= _FPU_DEFAULT; 34 else 35 fpc |= *modep & ~FPC_STATUS; 36 _FPU_SETCW (fpc); 37 38 return 0; 39 } 40