29 lines · cpp
1//===-- Implementation of fesetexceptflag function ------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/fenv/fesetexceptflag.h"10#include "hdr/types/fexcept_t.h"11#include "src/__support/FPUtil/FEnvImpl.h"12#include "src/__support/common.h"13#include "src/__support/macros/config.h"14 15namespace LIBC_NAMESPACE_DECL {16 17LLVM_LIBC_FUNCTION(int, fesetexceptflag,18 (const fexcept_t *flagp, int excepts)) {19 // Since the return type of fetestexcept is int, we ensure that fexcept_t20 // can fit in int type.21 static_assert(sizeof(int) >= sizeof(fexcept_t),22 "fexcept_t value cannot fit in an int value.");23 int excepts_to_set = static_cast<int>(*flagp) & excepts;24 fputil::clear_except(FE_ALL_EXCEPT);25 return fputil::set_except(excepts_to_set);26}27 28} // namespace LIBC_NAMESPACE_DECL29