/* Set given exception flags. PowerPC version. Copyright (C) 2016-2024 Free Software Foundation, Inc. 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 . */ #include int fesetexcept (int excepts) { fenv_union_t u, n; u.fenv = fegetenv_register (); n.l = (u.l | (excepts & FPSCR_STICKY_BITS) /* Turn FE_INVALID into FE_INVALID_SOFTWARE. */ | (excepts >> ((31 - FPSCR_VX) - (31 - FPSCR_VXSOFT)) & FE_INVALID_SOFTWARE)); if (n.l != u.l) { if (n.l & fenv_exceptions_to_reg (excepts)) /* Setting the exception flags may trigger a trap. ISO C 23 ยง 7.6.4.4 does not allow it. */ return -1; fesetenv_register (n.fenv); /* Deal with FE_INVALID_SOFTWARE not being implemented on some chips. */ if (excepts & FE_INVALID) feraiseexcept (FE_INVALID); } return 0; }