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35 /*! \internal \file
36  * \brief
37  * Declares and defines architecture booleans to minimize preprocessed code
38  *
39  * \ingroup module_hardware
40  */
41 #ifndef GMX_ARCHITECTURE_H
42 #define GMX_ARCHITECTURE_H
43 
44 namespace gmx
45 {
46 
47 //! Enum for GROMACS CPU hardware detection support
48 enum class Architecture
49 {
50     Unknown, //! Not one of the cases below
51     X86,     //! X86
52     Arm,     //! ARM
53     PowerPC  //! IBM PowerPC
54 };
55 
56 //! Whether the compilation is targeting 32-bit x86.
57 #if (defined __i386__ || defined __i386 || defined _X86_ || defined _M_IX86)
58 #    define GMX_IS_X86_32 1
59 #else
60 #    define GMX_IS_X86_32 0
61 #endif
62 
63 //! Whether the compilation is targeting 64-bit x86.
64 #if (defined __x86_64__ || defined __x86_64 || defined __amd64__ || defined __amd64 \
65      || defined _M_X64 || defined _M_AMD64)
66 #    define GMX_IS_X86_64 1
67 #else
68 #    define GMX_IS_X86_64 0
69 #endif
70 
71 //! Constant that tells what the architecture is
72 static constexpr Architecture c_architecture =
73 #if GMX_IS_X86_32 || GMX_IS_X86_64
74         Architecture::X86;
75 #elif defined __arm__ || defined __arm || defined _M_ARM || defined __aarch64__
76         Architecture::Arm;
77 #elif defined __powerpc__ || defined __ppc__ || defined __PPC__
78         Architecture::PowerPC;
79 #else
80         Architecture::Unknown;
81 #endif
82 
83 } // namespace gmx
84 
85 #endif // GMX_ARCHITECTURE_H
86