Philip Armstrong wrote:
On Thu, Jun 21, 2007 at 08:15:36PM +0200, peterv wrote:
So float math in *slower* than double math in Haskell? That is
interesting.
Why is that?
BTW, does Haskell support 80-bit "long double"s? The Intel CPU seems
to use
that format internally.
As I understand things, that is the effect of using -fexcess-precision.
Obviously this means that the behaviour of your program can change
with seemingly trivial code rearrangements,
Not just code rearrangements: your program will give different results depending
on the optimisation settings, whether you compile with -fvia-C or -fasm, and the
results will be different from those on a machine using fixed 32-bit or 64-bit
precision floating point operations.
Cheers,
Simon
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