Re: GSOC 16, Improvements to sqrtm,logm and funm

[PhilipNienhuis]

Mudit Sharma wrote
> <snip>
> As pointed out that JIT compiler is unavailable for Octave, so funm
> needs to be written in C++.
> <snip>
> * Write funm in C++, rewrite sqrtm in C++ and since scripts are slow
>   rewrite expm and logm in C++ ( scripts supplied earlier in this mail)

PMFJI

A cleverly vectorized .m file shouldn't be much slower than a function file
in C++ but is usually much easier to maintain.  In addition Octave has many
ready-baked linear-algebra functions; please avoid reinventing the wheel but
rather use existing code as much as possible.

Better first write/complete the functions in m-file format, use the profiler
to find the time-consuming parts, then first rewrite those bottlenecks in
C++.

Just my .02 $c

Philip




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