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//===-- Implementation for memalignment -------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "src/stdlib/memalignment.h"
#include "src/__support/CPP/bit.h"
#include "src/__support/common.h"
#include "src/__support/macros/config.h"
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(size_t, memalignment, (const void *p)) {
if (p == nullptr)
return 0;
uintptr_t addr = reinterpret_cast<uintptr_t>(p);
return size_t(1) << cpp::countr_zero(addr);
}
} // namespace LIBC_NAMESPACE_DECL
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