[Issue 4725] std.algorithm.sum()

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http://d.puremagic.com/issues/show_bug.cgi?id=4725



--- Comment #11 from David Simcha <dsimcha at yahoo.com> 2011-05-15 11:53:59 PDT ---
(In reply to comment #10)
> No need to teach or convince me of the virtues of ILP. We've long discussed in
> the newsgroup how associative operations can be significantly accelerated. I
> was simply replying to the implementation shown, which is a duplication of
> reduce. Ideally we'd capture more operation than summation in e.g.
> assoc_reduce. Then sum would become a simple alias.

Great idea!  When we figure hot how we want to do this, I should probably
incorporate it into std.parallelism, too, since std.parallelism already assumes
associativity anyhow.

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