winapi - What is the maximum size of an integer (x86)? -


i'm going upgrade vc++ 2008 vc++ 2010 or 2012. before upgrading have questions:

  • my compiler supports largest __int64 integers. __int128 supported in version vc++ 2010, 2012 , on?

  • my current compiler doesn't support _win64 or _win32 check windows platform. doubt _integral_max_bits solution; 64 if it's run in win32, or 128 otherwise. true?

for of compilers mention, 64 bit integer types exist both 32 , 64 bit targets. however, there no 128 bit integer types. so, _integral_max_bits evaluates 64 of listed compilers, , both 32 , 64 bit targets.

the best can use sse2 intrinsic __m128i depends on presence of sse2 unit on processor. don't need upgrade able use that. it's available in vs2008 also.


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