Faster log(10) calculation #398
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Add fast log calculation of small rational. log(x_small_precision) will be decomposed into a*log(4/3)+b*log(5/4)+log(close_to_one_rational). Examples: log(10) = 8*log(4/3)+log(32805/32768) log(2) = 3*log(5/4)+log(128/125)
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Diff is not so simple, and not so optimal. BigMath.log(BigDecimal(2), 250000)
# This optimization: 86.393285 seconds
# sqrt(pull #381) + mult(pull #380) optimization: 77.847769 secondsI'll revisit this after introducing |
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Improve
log(x_small_precision)by decomposinglog(x)intoa*log(4/3)+b*log(5/4)+log(close_to_one_rational).Improving log(10) will improve performance of log(x) of x<=0.1 and x>=10.