| 1 | //===-- Implementation of fesetexceptflag function ------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/fenv/fesetexceptflag.h" |
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| 10 | #include "hdr/types/fexcept_t.h" |
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| 11 | #include "src/__support/FPUtil/FEnvImpl.h" |
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| 12 | #include "src/__support/common.h" |
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| 13 | #include "src/__support/macros/config.h" |
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| 14 | |
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| 15 | namespace LIBC_NAMESPACE_DECL { |
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| 16 | |
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| 17 | LLVM_LIBC_FUNCTION(int, fesetexceptflag, |
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| 18 | (const fexcept_t *flagp, int excepts)) { |
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| 19 | // Since the return type of fetestexcept is int, we ensure that fexcept_t |
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| 20 | // can fit in int type. |
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| 21 | static_assert(sizeof(int) >= sizeof(fexcept_t), |
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| 22 | "fexcept_t value cannot fit in an int value." ); |
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| 23 | int excepts_to_set = static_cast<int>(*flagp) & excepts; |
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| 24 | fputil::clear_except(FE_ALL_EXCEPT); |
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| 25 | return fputil::set_except(excepts_to_set); |
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| 26 | } |
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| 27 | |
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| 28 | } // namespace LIBC_NAMESPACE_DECL |
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| 29 | |
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