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1//===----------------------------------------------------------------------===//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#ifndef _LIBCPP___ATOMIC_TO_GCC_ORDER_H10#define _LIBCPP___ATOMIC_TO_GCC_ORDER_H11 12#include <__atomic/memory_order.h>13#include <__config>14 15#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)16# pragma GCC system_header17#endif18 19_LIBCPP_BEGIN_NAMESPACE_STD20 21#if defined(__ATOMIC_RELAXED) && defined(__ATOMIC_CONSUME) && defined(__ATOMIC_ACQUIRE) && \22 defined(__ATOMIC_RELEASE) && defined(__ATOMIC_ACQ_REL) && defined(__ATOMIC_SEQ_CST)23 24_LIBCPP_HIDE_FROM_ABI inline _LIBCPP_CONSTEXPR int __to_gcc_order(memory_order __order) {25 // Avoid switch statement to make this a constexpr.26 return __order == memory_order_relaxed27 ? __ATOMIC_RELAXED28 : (__order == memory_order_acquire29 ? __ATOMIC_ACQUIRE30 : (__order == memory_order_release31 ? __ATOMIC_RELEASE32 : (__order == memory_order_seq_cst33 ? __ATOMIC_SEQ_CST34 : (__order == memory_order_acq_rel ? __ATOMIC_ACQ_REL : __ATOMIC_CONSUME))));35}36 37_LIBCPP_HIDE_FROM_ABI inline _LIBCPP_CONSTEXPR int __to_gcc_failure_order(memory_order __order) {38 // Avoid switch statement to make this a constexpr.39 return __order == memory_order_relaxed40 ? __ATOMIC_RELAXED41 : (__order == memory_order_acquire42 ? __ATOMIC_ACQUIRE43 : (__order == memory_order_release44 ? __ATOMIC_RELAXED45 : (__order == memory_order_seq_cst46 ? __ATOMIC_SEQ_CST47 : (__order == memory_order_acq_rel ? __ATOMIC_ACQUIRE : __ATOMIC_CONSUME))));48}49 50#endif51 52_LIBCPP_END_NAMESPACE_STD53 54#endif // _LIBCPP___ATOMIC_TO_GCC_ORDER_H55