On Thu, Jun 21, 2007 at 03:29:17PM -0400, Mark T.B. Carroll wrote:
Philip Armstrong <[EMAIL PROTECTED]> writes:
(snip)
Why on earth would you use -fexcess-precision if you're using Floats?
The excess precision only apples to Doubles held in registers on x86
IIRC. (If you spill a Double from a register to memory, then you lose
the extra precision bits in the process).
Some googling suggests that point 2 on
http://www.haskell.org/hawiki/FasterFloatingPointWithGhc
might have been what I was thinking of.
That's the old wiki. The new one gives the opposite advice! (As does
the ghc manual):
http://www.haskell.org/ghc/docs/latest/html/users_guide/faster.html
http://www.haskell.org/haskellwiki/Performance/Floating_Point
Phil
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