Hi, On Thu, 9 Aug 2012, Mike Stump wrote:
> > Ah. For simple objects like double_int I prefer to have either all > > ops mutating or all ops non-mutating. > > wide_int, which replaces double_int for int types, is always > non-mutating, by value interface. In C++, it will be const & input > parameters, to avoid the copies and retain the performance. We maintain > a cache under it, and reuse out of it for the long lived objects, for > short lived, we just allocate the on the stack as needed. Hmm. And maintaining a cache is faster than passing/returning/manipulating two registers? Ciao, Michael.
