...dimension.

In this paper, we distinguish between the terms ``dimension'' and ``unit''. Informally, a dimension corresponds to the quantity which is measured, whereas a unit is a standard measure of the quantity, relative to which all other measurements are done. For example, a gram is a unit for the mass dimension.

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...quantities.

Full support is not provided because of an internal bug in G++.

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...syntax.

It has not been possible to debug this feature fully, as G++ does not currently implement template argument expressions involving * and /.

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