Re: [Boost-users] [math][special_functions] Why is cbrt(x) slowerthanpow(x, 1/3)?

Subject: Re: [Boost-users] [math][special_functions] Why is cbrt(x) slowerthanpow(x, 1/3)?
From: Joel Falcou (joel.falcou_at_[hidden])
Date: 2010-01-18 04:40:44

John Maddock wrote:
>> As I recall, MSVC saved and restores the floating point rounding type
>> on most floating point calls like that, which causes its speed hit,
>> you can work around it by making your own in assembly or use SSE or
>> so, as I recall that is...
> 
> Nod... we even have most of the tools required in Johan Rades floating 
> point utils, but there are more important fist to fry for now...
> 
> John.

I may have such an implementation in NT2 that we may share