b6bc9d72f6
This is step 4 of https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079
29 lines
1.0 KiB
C++
29 lines
1.0 KiB
C++
//===-- Implementation of fesetexceptflag function ------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "src/fenv/fesetexceptflag.h"
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#include "src/__support/FPUtil/FEnvImpl.h"
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#include "src/__support/common.h"
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#include <fenv.h>
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namespace LIBC_NAMESPACE {
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LLVM_LIBC_FUNCTION(int, fesetexceptflag,
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(const fexcept_t *flagp, int excepts)) {
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// Since the return type of fetestexcept is int, we ensure that fexcept_t
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// can fit in int type.
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static_assert(sizeof(int) >= sizeof(fexcept_t),
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"fexcept_t value cannot fit in an int value.");
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int excepts_to_set = static_cast<int>(*flagp) & excepts;
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fputil::clear_except(FE_ALL_EXCEPT);
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return fputil::set_except(excepts_to_set);
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}
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} // namespace LIBC_NAMESPACE
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