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crpl:docs:ln
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~~DISCUSSION~~ <- CRPL reference <- Math Commands
ln
| Arguments | Result | Notation |
|---|---|---|
| A floating point or integer | The natural log | f1 – f2 |
Description
The natural logarithm. Gives the magnitude of the number. On zero, returns -inf. Below zero, returns NaN, a special value that always causes failure when compared to other numbers. (ie. (NaN<0) ⇒ false, (Nan>=0) ⇒ false)
other logarithms
ln(x) = log(x, e) ln(x)/ln(10) = log10(x) ln(2)=0.6931-ish ln(e)=.999999 (odd, hunh?) ln(10)=2.3026-ish
Examples
ShowTraceLog -1 ln trace #NaN 0 ln trace #-inf 1 ln trace #0 e ln trace #1 e dup mul ln trace #2
crpl/docs/ln.1425970565.txt.gz · Last modified: 2015/03/10 02:56 by warren
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