[fpc-pascal] speed of real calculations
florian at freepascal.org
Wed Oct 18 09:54:23 CEST 2006
Jonas Maebe wrote:
> On 18 okt 2006, at 08:31, Marc Santhoff wrote:
>> is anyone aware of or has done a calculations speed comparison for the
>> four float types (single, double, extended, comp)?
> For the x87, the only difference can come from cache misses/hits due to
> the different sizes they take up in memory, because the x87 performs all
> calculations using either extended (the default in FPC) or double
> precision (user-settable).
You can set it also to single. But these settings affect only division, roots
and other complex operations.
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