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Bayley, Alistair wrote:
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<pre wrap="">[<a class="moz-txt-link-freetext" href="mailto:haskell-cafe-bounces@haskell.org">mailto:haskell-cafe-bounces@haskell.org</a>] On Behalf Of Andrew Coppin
Donald Bruce Stewart wrote:
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<pre wrap="">Some things to remember using Doubles:
* {-# OPTIONS -fexcess-precision #-}
* -fvia-C
* -fbang-patterns
* -optc-O2 -optc-mfpmath=sse -optc-msse2
* -optc-march=pentium4
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<pre wrap="">1. What do all those things do?
2. Is the effect actually that large?
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Large? Depends what you mean by large, but adding a few flags to get
just a 10-20% speedup isn't to be ignored:
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Sure - if it really <i>is</i> 10-20%. (And not, say, 0.001 - 0.002%.)<br>
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