The log1+ word uses flog1p and works well when numbers are small.
The expm1 is provided as well, but not as a call the fexpm1:
https://docs.factorcode.org/content/word-e%5E-1%2Cmath.functions.html
It’s a one line change to add fexpm1 plus tests to make sure it works if you’d
like to make a con
Dear Sir,
Continuing about fexpm1 and flog1p, kindly note that in vocabulary
math.functions the definition of log1+ given as 1 + log, defeats the purpose of
giving flog1p in that 1 + log will always give inaccurate values when x <<1.
This definition of log1+ should be removed from the vocabular