1 /* Set current rounding direction. 2 Copyright (C) 2004-2022 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_private.h> 20 #include <arm-features.h> 21 22 23 int __fesetround(int round)24__fesetround (int round) 25 { 26 /* FE_TONEAREST is the only supported rounding mode 27 if a VFP unit isn't present. */ 28 if (!ARM_HAVE_VFP) 29 return (round == FE_TONEAREST) ? 0 : 1; 30 31 if (round & ~_FPU_MASK_RM) 32 return 1; 33 34 libc_fesetround_vfp (round); 35 return 0; 36 } 37 libm_hidden_def (__fesetround) 38 weak_alias (__fesetround, fesetround) 39 libm_hidden_weak (fesetround) 40