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=/ and ~:/ Improved initial writing: 2001-07-31
last updated: 2001-07-31

The monads =/ and ~:/ on boolean vectors have been made faster. For example:

Length     Expression     J 5.01    J 4.06    Ratio
1e5     ~:/ 0.00047461  0.00101186  2.13
1e5 = / 0.000467657  0.000995378  2.13
1e6 ~:/ 0.00419802  0.00950009  2.26
1e6 = / 0.00423573  0.00960262  2.27



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