1 /* Install given floating-point control modes. PowerPC version. 2 Copyright (C) 2016-2022 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 #include <fenv_libc.h> 20 #include <fpu_control.h> 21 22 int fesetmode(const femode_t * modep)23fesetmode (const femode_t *modep) 24 { 25 fenv_union_t old, new; 26 27 /* Logic regarding enabled exceptions as in fesetenv. */ 28 29 new.fenv = *modep; 30 old.fenv = fegetenv_control (); 31 new.l = (new.l & ~FPSCR_STATUS_MASK) | (old.l & FPSCR_STATUS_MASK); 32 33 if (old.l == new.l) 34 return 0; 35 36 __TEST_AND_EXIT_NON_STOP (old.l, new.l); 37 __TEST_AND_ENTER_NON_STOP (old.l, new.l); 38 39 fesetenv_control (new.fenv); 40 return 0; 41 } 42