https://sourceforge.net/p/predef/wiki/Architectures/
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Type | Macro | Description |
Identification |
__alpha__ |
Defined by GNU C |
Version |
__alpha_ev'V'__ |
V = Version |
Identification |
__alpha |
Defined by DEC C |
Identification |
_M_ALPHA |
Defined by Visual Studio |
Example
CPU | Macro |
Alpha EV4 |
__alpha_ev4__ |
Alpha EV5 |
__alpha_ev5__ |
Alpha EV6 |
__alpha_ev6__ |
Type | Macro | Description |
Identification |
__amd64__
__amd64
__x86_64__
__x86_64 |
Defined by GNU C and Sun Studio |
Identification |
_M_X64
_M_AMD64 |
Defined by Visual Studio |
Notice that x32 can be detected by checking if the CPU uses the ILP32 data model.
Type | Macro | Description |
Identification |
__arm__ |
Defined by GNU C and RealView |
Identification |
__thumb__ |
Defined by GNU C and RealView in Thumb mode |
Version |
__ARM_ARCH_'V'__ |
V = Version
Defined by GNU C 1 |
Identification |
__TARGET_ARCH_ARM
__TARGET_ARCH_THUMB |
Defined by RealView |
Version |
__TARGET_ARCH_ARM = V
__TARGET_ARCH_THUMB = V |
V = Version |
Version |
__TARGET_ARCH_'VR' |
VR = Version and Revision |
Identification |
_ARM |
Defined by ImageCraft C |
Identification |
_M_ARM |
Defined by Visual Studio |
Identification |
_M_ARMT |
Defined by Visual Studio in Thumb mode |
Version |
_M_ARM = V |
V = Version |
Identification |
__arm |
Defined by Diab |
Example
CPU | Macro | _M_ARM |
ARM 2 |
__ARM_ARCH_2__ |
|
ARM 3 |
__ARM_ARCH_3__
__ARM_ARCH_3M__ |
|
ARM 4T |
__ARM_ARCH_4T__
__TARGET_ARM_4T |
|
ARM 5 |
__ARM_ARCH_5__
__ARM_ARCH_5E__ |
5 |
ARM 5T |
__ARM_ARCH_5T__
__ARM_ARCH_5TE__
__ARM_ARCH_5TEJ__ |
|
ARM 6 |
__ARM_ARCH_6__
__ARM_ARCH_6J__
__ARM_ARCH_6K__
__ARM_ARCH_6Z__
__ARM_ARCH_6ZK__ |
6 |
ARM 6T2 |
__ARM_ARCH_6T2__ |
|
ARM 7 |
__ARM_ARCH_7__
__ARM_ARCH_7A__
__ARM_ARCH_7R__
__ARM_ARCH_7M__
__ARM_ARCH_7S__ |
7 |
Type | Macro | Description |
Identification |
__aarch64__ |
Defined by GNU C 1 |
Type | Macro | Description |
Identification |
__bfin
__BFIN__ |
Defined by GNU C |
Type | Macro | Description |
Identification |
__convex__ |
Defined by GNU C |
Version |
__convex_'V'__ |
V = Version |
Example
CPU | Macro |
Convex C1 |
__convex_c1__ |
Convex C2 |
__convex_c2__ |
Convex C32xx series |
__convex_c32__ |
Convex C34xx series |
__convex_c34__ |
Convex C38xx series |
__convex_c38__ |
Type | Macro | |
Identification |
__epiphany__ |
|
Type | Macro | Description |
Identification |
__hppa__ |
Defined by GNU C |
Identification |
__HPPA__ |
Defined by Stratus VOS C |
Identification |
__hppa |
|
Version |
_PA_RISC'V'_'R' |
V = Version R = Revision |
See also OpenPA.net.
Example
CPU | Macro |
PA RISC 1.0 |
_PA_RISC1_0 |
PA RISC 1.1 |
_PA_RISC1_1
__HPPA11__
__PA7100__ |
PA RISC 2.0 |
_PA_RISC2_0
__RISC2_0__
__HPPA20__
__PA8000__ |
Type | Macro | Format | Description |
Identification |
i386
__i386
__i386__ |
|
Defined by GNU C |
Version |
__i386__
__i486__
__i586__
__i686__ |
|
Defined by GNU C |
Identification |
__i386 |
|
Defined by Sun Studio |
Identification |
__i386
__IA32__ |
|
Defined by Stratus VOS C |
Identification |
_M_I86 |
|
Only defined for 16-bits architectures
Defined by Visual Studio, Digital Mars, and Watcom C/C++ (see note below) |
Identification |
_M_IX86 |
|
Only defined for 32-bits architectures
Defined by Visual Studio, Intel C/C++, Digital Mars, and Watcom C/C++ |
Version |
_M_IX86 |
V00 |
V = Version |
Identification |
__X86__ |
|
Defined by Watcom C/C++ |
Identification |
_X86_ |
|
Defined by MinGW32 |
Identification |
__THW_INTEL__ |
|
Defined by XL C/C++ |
Identification |
__I86__ |
|
Defined by Digital Mars |
Version |
__I86__ |
V |
V = Version |
Identification |
__INTEL__ |
|
Defined by CodeWarrior |
Identification |
__386 |
|
Defined by Diab |
Notice that Watcom C/C++ defines _M_IX86
for both 16-bits and 32-bits architectures. Use __386__
or _M_I386
to detect 32-bits architectures in this case.
Notice that the Stratus VOS is big-endian on IA32, so these macros cannot be used to detect endianness if __VOS__
is set.
Example
CPU | _M_IX86 | __I86__ |
80386 |
300 |
3 |
80486 |
400 |
4 |
Pentium |
500 |
5 |
Pentium Pro/II |
600 |
6 |
Type | Macro | Format | Description |
Identification |
__ia64__
_IA64
__IA64__ |
|
Defined by GNU C |
Identification |
__ia64 |
|
Defined by HP aCC |
Identification |
_M_IA64 |
|
Defined by Visual Studio |
Identification |
_M_IA64 |
|
Defined by Intel C/C++ |
Version |
_M_IA64 |
? |
|
Identification |
__itanium__ |
|
Defined by Intel C/C++ |
Example
CPU | _M_IA64 (Intel C/C++) |
|
64100 |
Type | Macro | Description |
Identification |
__m68k__ |
Defined by GNU C |
Version |
__mc'V'__
__mc'V'
mc'V' |
V = Version |
Identification |
M68000 |
Defined by SAS/C |
Identification |
__MC68K__ |
Defined by Stratus VOS C |
Version |
__MC'V'__ |
V = Version |
Example
CPU | Macro |
68000 |
__mc68000__
__MC68000__ |
68010 |
__mc68010__ |
68020 |
__mc68020__
__MC68020__ |
68030 |
__mc68030__
__MC68030__ |
68040 |
__mc68040__ |
68060 |
__mc68060__ |
Type | Macro | Description |
Identification |
__mips__
mips |
Defined by GNU C |
Version |
_MIPS_ISA = _MIPS_ISA_MIPS'V' |
V = MIPS ISA level |
Version |
_R3000
_R4000
_R5900 |
|
Identification |
__mips |
Defined by MIPSpro and GNU C |
Version |
__mips |
The value indicates the MIPS ISA (Instruction Set Architecture) level |
Version |
__MIPS_ISA'V'__ |
V = MIPS ISA level |
Identification |
__MIPS__ |
Defined by Metrowerks |
Example
CPU | _MIPS_ISA | GNU C Macro | __mips | MIPSpro Macro |
R2000 |
_MIPS_ISA_MIPS1 |
|
1 |
|
R3000 |
_MIPS_ISA_MIPS1 |
_R3000 |
1 |
|
R6000 |
_MIPS_ISA_MIPS2 |
|
2 |
__MIPS_ISA2__ |
R4000 |
|
_R4000 |
|
|
R4400 |
_MIPS_ISA_MIPS3 |
|
3 |
__MIPS_ISA3__ |
R8000 |
_MIPS_ISA_MIPS4 |
|
4 |
__MIPS_ISA4__ |
R10000 |
_MIPS_ISA_MIPS4 |
|
4 |
__MIPS_ISA4__ |
Type | Macro | Description |
Identification |
__powerpc
__powerpc__
__powerpc64__
__POWERPC__
__ppc__
__ppc64__
__PPC__
__PPC64__
_ARCH_PPC
_ARCH_PPC64 |
Defined by GNU C |
Version |
__ppc'V'__ |
V = Version |
Identification |
_M_PPC |
Defined by Visual Studio |
Version |
_M_PPC |
? |
Identification |
_ARCH_PPC
_ARCH_PPC64 |
Defined by XL C/C++ |
Version |
_ARCH_'V' |
V = Version |
Version |
__PPCGECKO__ |
Gekko
Defined by CodeWarrior |
Version |
__PPCBROADWAY__ |
Broadway
Defined by CodeWarrior |
Version |
_XENON |
Xenon |
Identification |
__ppc |
Defined by Diab |
Example
CPU | _M_PPC | Macro | XL Macro |
PowerPC 440 |
|
|
_ARCH_440 |
PowerPC 450 |
|
|
_ARCH_450 |
PowerPC 601 |
601 |
__ppc601__ |
_ARCH_601 |
PowerPC 603 |
603 |
__ppc603__ |
_ARCH_603 |
PowerPC 604 |
604 |
__ppc604__ |
_ARCH_604 |
PowerPC 620 |
620 |
|
|
Pyramid 9810
Type | Macro |
Identification |
pyr |
Type | Macro | Description |
Identification |
__THW_RS6000 |
Defined by XL C/C++ |
Identification |
_IBMR2 |
|
Identification |
_POWER |
|
Identification |
_ARCH_PWR
_ARCH_PWR2
_ARCH_PWR3
_ARCH_PWR4 |
|
Type | Macro | Description |
Identification |
__sparc__ |
Defined by GNU C |
Identification |
__sparc |
Defined by Sun Studio |
Version |
__sparc_v8__
__sparc_v9__ |
Defined by GNU C |
Version |
__sparcv8
__sparcv9 |
Defined by Sun Studio |
Example
CPU | Sun Studio Macro | GNU C Macro |
SPARC v8 (SuperSPARC) |
__sparcv8 |
__sparc_v8__ |
SPARC v9 (UltraSPARC) |
__sparcv9 |
__sparc_v9__ |
Type | Macro | Description |
Identification |
__sh__ |
Defined by GNU C |
Version |
__sh1__
__sh2__
__sh3__
__SH3__
__SH4__
__SH5__ |
|
Type | Macro | Description |
Identification |
__370__
__THW_370__ |
Identifies System/370
Defined by XL C/C++ |
Identification |
__s390__ |
Identifies System/390
Defined by GNU C |
Identification |
__s390x__ |
Identifies z/Architecture
Defined by GNU C |
Identification |
__zarch__ |
Identifies z/Architecture
Defined by clang |
Identification |
__SYSC_ZARCH__ |
Identifies z/Architecture
Defined by Systems/C |
Type | Macro | Description |
Identification |
_TMS320C2XX
__TMS320C2000__ |
C2000 series |
Identification |
_TMS320C5X
__TMS320C55X__ |
C5000 series |
Identification |
_TMS320C6X
__TMS320C6X__ |
C6000 series |
Example
DSP | Macro |
C28xx |
_TMS320C28X |
C54x |
_TMS320C5XX |
C55x |
__TMS320C55X__ |
C6200 |
_TMS320C6200 |
C6400 |
_TMS320C6400 |
C6400+ |
_TMS320C6400_PLUS |
C6600 |
_TMS320C6600 |
C6700 |
_TMS320C6700 |
C6700+ |
_TMS320C6700_PLUS |
C6740 |
_TMS320C6740 |
TMS470
Type | Macro |
Identification |
__TMS470__ |