| 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-exception |
| 6 | // |
| 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 | |
| 14 | namespace LIBC_NAMESPACE { |
| 15 | |
| 16 | LLVM_LIBC_FUNCTION(int, fesetexceptflag, |
| 17 | (const fexcept_t *flagp, int excepts)) { |
| 18 | // Since the return type of fetestexcept is int, we ensure that fexcept_t |
| 19 | // can fit in int type. |
| 20 | static_assert(sizeof(int) >= sizeof(fexcept_t), |
| 21 | "fexcept_t value cannot fit in an int value."); |
| 22 | int excepts_to_set = static_cast<int>(*flagp) & excepts; |
| 23 | fputil::clear_except(FE_ALL_EXCEPT); |
| 24 | return fputil::set_except(excepts_to_set); |
| 25 | } |
| 26 | |
| 27 | } // namespace LIBC_NAMESPACE |
| 28 |