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mantis
2003 Nov 12
1
Power (^) 10x slower in R since version 1.7.1... What next?
...of you are already aware of
it): the slow down is due to the adoption of a different algorithm for pow
in mingw 3.x. This is motivated by some other changes in mingw. Here is a
quote of Danny Smith that did this change:
>When mingw changed default FPU settings from 53-bit mantissa
>to 64 bit mantisa, the dll-provided pow function no longer
>returned integral values when both operands were integral. Now, I don't
>think that is a requiremnet of the standard but every other pow
>implementation I looked at did that. So I changed to a well-tested
>pow function (from the Cepehes mat...