From: John Max Skaller (skaller_at_[hidden])
Date: 2001-08-20 20:54:41
Peter Dimov wrote:
> the unnecessary initialization in this case is rarely a measurable problem.
Matrix r; // initialised ..
r = x * y;
is an O(n) + O(n^3) operation. The O(n) is irrelevant for large n.
But not in the common case n=2, where it represents 20% of overall time.
For addition, its 50%.
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