derek.holloway
7502bf64a4
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40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
//===----------------------------------------------------------------------===//
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//
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// Part of libcu++, the C++ Standard Library for your entire system,
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// 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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// SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES.
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//
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//===----------------------------------------------------------------------===//
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#ifndef __CCCL_ARCH_H
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#define __CCCL_ARCH_H
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// The header provides the following macros to determine the host architecture:
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//
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// _CCCL_ARCH(ARM64) ARM64
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// _CCCL_ARCH(X86_64) X86 64 bit
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// Determine the host compiler and its version
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// Arm 64-bit
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#if (defined(__aarch64__) || defined(_M_ARM64) || defined(_M_ARM64EC) /*emulation*/)
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# define _CCCL_ARCH_ARM64_() 1
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#else
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# define _CCCL_ARCH_ARM64_() 0
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#endif
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// X86 64-bit
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// _M_X64 is defined even if we are compiling in Arm64 emulation mode
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#if (defined(_M_X64) && !defined(_M_ARM64EC)) || defined(__amd64__) || defined(__x86_64__)
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# define _CCCL_ARCH_X86_64_() 1
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#else
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# define _CCCL_ARCH_X86_64_() 0
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#endif
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#define _CCCL_ARCH(...) _CCCL_ARCH_##__VA_ARGS__##_()
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#endif // __CCCL_ARCH_H
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