\[-\log \left(\frac{1}{x} - 1\right)\]
Test:
neg log
Bits:
128 bits
Bits error versus x
Time: 8.2 s
Input Error: 0.1
Output Error: 0.8
Log: ⚲
Profile: 🕒
\(-{\left(\sqrt[3]{\log \left(\frac{1}{x} - 1\right)}\right)}^3\)
  1. Started with
    \[-\log \left(\frac{1}{x} - 1\right)\]
    0.1
  2. Using strategy rm
    0.1
  3. Applied add-cube-cbrt to get
    \[-\color{red}{\log \left(\frac{1}{x} - 1\right)} \leadsto -\color{blue}{{\left(\sqrt[3]{\log \left(\frac{1}{x} - 1\right)}\right)}^3}\]
    0.8

Original test:


(lambda ((x default))
  #:name "neg log"
  (- (log (- (/ 1 x) 1))))