Avoiding some template bloat?
bearophile
bearophileHUGS at lycos.com
Mon Oct 8 15:35:12 PDT 2012
> (if necessary slicing the fixed sized matrix into a dynamic
> array of dynamic arrays).
It's not hard to convert a fixed sized matrix into this run-time
value that requires no templating on the sizes and requires no
slicing and no heap allocations inside the template function that
performs just the compile-time tests:
struct Mat2D(T) {
T* ptr;
size_t nrows, ncols;
// + indexing methods
}
Using something like that the matrix multiplication function I've
shown becomes just a shell that calls a function that accepts two
Mat2D and is templated only on T.
Bye,
bearophile
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