On Wed, Jun 21, 2006 at 03:49:22PM -0400, Daryle Walker wrote:

On 6/19/06 12:03 PM, "Geoffrey Irving" <irving@cs.stanford.edu> wrote:

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On Mon, Jun 19, 2006 at 09:43:45AM -0600, Dave Steffen wrote: [SNIP]

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It seems to me that building operations for vectors-with-units and matrices-with-units is a duplication of effort. If the PQS library is as easy to use as [ it should be | we think it is ] then incorporating units into UBLAS should be both easy and a good exercise.

Small vectors and transforms require somewhat different interfaces than large vectors. For example, uBLAS does not have cross products, normalization, quaternions, exponential maps from vectors to quaternions, etc. [TRUNCATE]

But we have a quaternion library too....

When I said quaternions, I meant the action of quaternions on vectors. Certainly any small vector library would want to use the existing quaternions. Geoffrey