Re: [Boost-users] [enable_if][type_traits] Overload resolution question

From: Gottlob Frege (gottlobfrege_at_[hidden])
Date: 2006-11-13 16:18:38

On 11/11/06, Michael Marcin <mmarcin_at_[hidden]> wrote:
...

Finally I'm using this class to replace a lot of hardcoded / macro logic and
> often as an optimization the code uses binary shifts to represent power of
> 2
> multiply/divides.  Going forward these divides need to work with both
> fixed
> and floating point types so f >> 1 needs to change to f / 2.  Is it
> possible
> to create an overload for the / and * operators that determine if the
> operand is an integral constant and is a power of 2 and use a binary shift
> internally?

If, in the end, the thing you are shifting is an integer type, the compiler
will do the '/ 2' => '>> 1' substitution for you.  So don't worry about it.

Thanks,
>
> Michael Marcin
>
>
>
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