Re: [Boost-users] [units]

Subject: Re: [Boost-users] [units]
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2011-08-30 11:09:39

AMDG

On 08/30/2011 01:04 AM, Thomas Taylor wrote:
> Could you please review the following patch for inclusion in boost::units?
> 
> *WHY*: Obviously this only defines a conversion for boost::units::one to a 
> numerical 1. When trying to convert at runtime (aiming for a runtime/dynamic 
> unit instead of the compiletime/static unit provided) I use the following 
> function:
> 
> template <typename U1, typename U2>
> double unit_dispatch2t(U1 const& u1, U2 const& u2) {
>     return bu::conversion_factor(u1,u2);
> }
> 
> where U1 and U2 are boost::unit::unit derivatives.
> 
> Without a conversion operator the compiler chickens out by claiming to not 
> be able to convert boost::units::one to (in my case) double.
> 
> <snip>
> 

I assume that the case that fails is something like

double x = conversion_factor(si::meters, si::meters);

?

Fixed in r74159.

In Christ,
Steven Watanabe