4rpl:commands:ln
ln
LN
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. Eg. (NaN<0) -> false, (Nan>=0) -> false
other logarithms
ln(x) = log(x, e)
ln(x)/ln(10) = log10(x)
ln(2)=0.6931…
ln(e)=.999999
ln(10)=2.3026…
Examples
trace(ln(-1)) #prints 'NaN' trace(ln(0)) #prints '-inf' trace(ln(1)) #prints '0' trace(ln(e)) #prints '1'
⇐ Index
4rpl/commands/ln.txt · Last modified: 2025/02/14 14:57 by 127.0.0.1
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