Stata 15 help for ln1p()

[FN] Mathematical functions

Function

ln1p(x) Description: the natural logarithm of 1+x with higher precision than ln(1+x) for small values of |x| Domain: -1+c(epsdouble) to 8e+307 Range: -37 to 709

log1p(x) Description: a synonym for ln1p(x)


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