1b7e05c87SSiva Chandra Reddy //===-- Implementation of fesetexceptflag function ------------------------===// 2b7e05c87SSiva Chandra Reddy // 3b7e05c87SSiva Chandra Reddy // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4b7e05c87SSiva Chandra Reddy // See https://llvm.org/LICENSE.txt for license information. 5b7e05c87SSiva Chandra Reddy // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6b7e05c87SSiva Chandra Reddy // 7b7e05c87SSiva Chandra Reddy //===----------------------------------------------------------------------===// 8b7e05c87SSiva Chandra Reddy 9b7e05c87SSiva Chandra Reddy #include "src/fenv/fesetexceptflag.h" 1076ec69a9STue Ly #include "src/__support/FPUtil/FEnvImpl.h" 11b7e05c87SSiva Chandra Reddy #include "src/__support/common.h" 12b7e05c87SSiva Chandra Reddy 13b7e05c87SSiva Chandra Reddy #include <fenv.h> 14b7e05c87SSiva Chandra Reddy 15b7e05c87SSiva Chandra Reddy namespace __llvm_libc { 16b7e05c87SSiva Chandra Reddy 17b7e05c87SSiva Chandra Reddy LLVM_LIBC_FUNCTION(int, fesetexceptflag, 18b7e05c87SSiva Chandra Reddy (const fexcept_t *flagp, int excepts)) { 19b7e05c87SSiva Chandra Reddy // Since the return type of fetestexcept is int, we ensure that fexcept_t 209550f8baSSiva Chandra Reddy // can fit in int type. 219550f8baSSiva Chandra Reddy static_assert(sizeof(int) >= sizeof(fexcept_t), 229550f8baSSiva Chandra Reddy "fexcept_t value cannot fit in an int value."); 23*40a55fffSAlex Brachet int excepts_to_set = static_cast<int>(*flagp) & excepts; 241c92911eSMichael Jones fputil::clear_except(FE_ALL_EXCEPT); 251c92911eSMichael Jones return fputil::set_except(excepts_to_set); 26b7e05c87SSiva Chandra Reddy } 27b7e05c87SSiva Chandra Reddy 28b7e05c87SSiva Chandra Reddy } // namespace __llvm_libc 29