[cfe-dev] Native llvm integer types in clang

Chris Lattner clattner at apple.com
Mon Feb 1 10:16:45 PST 2010

On Feb 1, 2010, at 9:35 AM, Jochen Wilhelmy wrote:

> Hi!
> is there a way to access the native llvm fixed width types in clang?
> there is of course stdint.h which maps e.g.int32_t to int if int
> has 32 bit. But is there a way to access the native types
> like i32? perhaps via __i32 or __int(32) or whatever,
> ranging from i1 to i256 ;-)
> This also would simplify stdint.h.
> But I guess this makes internal problens e.g. in the
> name mangling.

Many CPUs support many different integer types, for example x86-64 supports i8, i16, i32, i64, i128.

Your best bet is to use the int_fast*_t typedefs from <stdint.h>


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