3D Math Data structures/SIMD

["Jérôme M. Berger"]

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Janice Caron wrote:
> Likewise, vector multiplication must mean vector multiplication, and
> nothing else. (Arguably, there are two forms of vector multiplication
> - dot product and cross product - however, cross product only has
> meaning in three-dimensions, whereas dot product has meaning in any
> number of dimensions, so dot production is more general).
> 
	Actually, there are *four* forms of vector multiplication:
 - dot product;
 - cross product (which btw is defined for all finite
dimensionalities greater than 1);
 - outer product;
 - component-wise.

	Of the four, component-wise is the only one that makes sense for a
multiplication *operator* because it's the only one that is defined
as taking exactly two input operands in vector space and returning a
value in the same vector space.

		Jerome
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+------------------------- Jerome M. BERGER ---------------------+
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