RH> I suggest you try the benchmarks in
RH> http://www.jsoftware.com/jwiki/Essays/Index_in_Nub
RH> in APL.
I just did ( a simplified version) and there is definitively a major
problem with the dyadic iota of Dyalog APL.
These results points to either a "bug" in both interpreters or a
mystery...
It seems to me that APL implementers of Dyalog would be best to require
your services for dyadic iota for float...
Here are the results (all tests done on my PC, Dell OptiPlex GX270,
Processor x86 Family 15 Model 2 Stepping 9 GenuineIntel ~2593 Mhz
i=:2e5$1e5?2e9
f=:i%i+0.1
J J 6.01 APL Dyalog 10.0.2
Integer .i~i 0.065 i{iota}i 0.109
Float .i~f 2.826 f{iota}f 1402.875
Can anyone confirm these results and add other APL implementations if they
so have ?
Roger ! How can we explain that huge difference between .i~f and f{iota}f
?
Paul Gauthier
APL Software Developer - Senior
[EMAIL PROTECTED]
Phone: 312-739-3467
Fax: 312-739-3496
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