On 9/21/05, Cromwell Enage <sponage@yahoo.com> wrote:
--- Peder Holt wrote:
Definitely an improvement.
Perhaps it would be a good idea to move the entire metamath/double implementation to the mpl/math directory?
Agreed. The question now is where main development should continue: the Sandbox CVS or the Boost Vault <http://boost-consulting.com/vault/>.
Btw. My initial motivation for developing the compile time double, was to be able to implement an expression library on top of it, supporting differentiation and simple equation solving. typedef times<sine<_1>,_1> fn; typedef differentiate<fn,_1> dfn; typedef apply<dfn,pi> number; I haven't been able to implement this without adding a function_tag typedef to all metafunctions. plus -> plus_tag sine -> sine_tag In addition, it would be great to have fusion-support inplace, allowing: BOOST_AUTO(fn,sin(_1)*_1); BOOST_AUTO(dfn,diff(fn,_1)); and in turn: double result=dfn(pi()); or typedef BOOST_TYPEOF(dfn) tdfn; typedef apply<tdfn,pi> number; The fundamental fusion support is something that could be part of the mpl_math library. Regards, Peder
Cromwell D. Enage
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