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From: Martin Slater (mslater_at_[hidden])
Date: 2006-09-21 09:11:23

> created. The other advantage is that the resulting assembly code is just as
> fast as if the functions had all been explicitly written.

even if that assembly is optimised sse?
> vector2d v1(1.0f, 2.0f);
> vector3d v2(-1.0f, 3.0f, 2.0f);
> vector4d res;
> vector_add(v1, v2, res);
> /* res now contains (0.0f, 5.0f, 2.0f, 1.0f) */

I've been bitten too many times using a library that does just this, if
I want to change a n dimensional vector to any other dimension the added
values should be explicitly provided. Optimised versions that
implicitly assume a value should be named accordingly so their use is
obvious. Also using a c style interface to make the actual maths even
more impenetrable seems like a bad idea.

There was a very long discussion about a vector library aimed towards
game development on the sweng mailing list recently
which you may find useful.



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