Re: [boost] [math] pow instantiates a number of template proportional to the exponent

From: Hervé Brönnimann (hervebronnimann_at_[hidden])
Date: 2008-05-16 22:35:36

On May 15, 2008, at 10:40 AM, John Moeller wrote:
> Fair enough.  I think, though, if you're going to try to make sure  
> that
> the compiler doesn't miss multiplication by 1, you may as well go  
> all the
> way and add another template parameter to capture N%2, and get rid  
> of the
> ternary statement:

To be clear, I'm not concerned about optimizing multiplication by 1  
for builtin types, of course.  But it seems to me that the compiler  
shouldn't really be able to optimize for user-defined types (what if  
multiplication isn't inlined, for instance...)
--
Hervé Brönnimann
hervebronnimann_at_[hidden]