Re: [boost] Proposed templated integer_sort

Subject: Re: [boost] Proposed templated integer_sort
From: Pyry Jahkola (pyry.jahkola_at_[hidden])
Date: 2008-12-16 09:03:21

Gevorg Voskanyan wrote:
> I suggest modifying CastFloatIter() function to use memcpy for accessing floats as integers, as shown below:

Hmm, I don't think it's any better than reinterpret casting. (It actually does
the reinterpret cast when converting float const * to void const *...) I'd
suggest using a union instead, for the purpose of treating a float as integer:

      template <typename To, typename From>
      inline To bitwise_cast(From const & from) {
          BOOST_STATIC_ASSERT(sizeof(To) == sizeof(From));
          union { To to; From from; } u;
          u.from = from;
          return u.to;
      }

Usage example: http://codepad.org/7gNXqFHO

-- 
Pyry Jahkola
pyry.jahkola_at_[hidden]