title: Determine `sizeof float` without compilation
body: <p>I'd like to know the size of a <code>float</code> in GCC, without having to run the compiler. I know one option is to write a small function and have the compiler print out an assembly listing.  </p>
  
  <p>There is <code>limits.h</code>, which contains the minimums and maximums, but is there something similar that tells the size of the different implicit types?</p>
  
  <p>I'm using GCC on Windows 7 x64; the target platform is ARM7 32 bit mode. Language is C.</p>