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f/ Improved (b) initial writing: 2006-05-26
last updated: 2006-05-26

f/y have been made faster on boolean y with an odd number of columns and commutative boolean functions f (= ~: +. *.). The following benchmarks demonstate the improvement:

b=: 97 10007 ?@$ 2
c=: |: b
timer=: 6!:2
timer 'Expression'
Expression    J 6.01    J 5.04    Ratio
+./b 0.00056599 0.00154346 2.73
+./c 0.00066633 0.00166236 2.49
~:/b 0.00045097 0.00152730 3.39
~:/c 0.00060139 0.00164138 2.73


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