\[\log_* (1 + {\left(\sinh b\right)}^{\left(\tan^{-1}_* \frac{a}{\sin a}\right)})\]
Test:
(log1p (pow (sinh b) (atan2 a (sin a))))
Bits:
128 bits
Bits error versus a
Bits error versus b
Time: 7.8 s
Input Error: 5.5
Output Error: 5.5
Log: ⚲
Profile: 🕒
\(\log_* (1 + {\left({\left(\sqrt[3]{\sinh b}\right)}^3\right)}^{\left(\tan^{-1}_* \frac{a}{\sin a}\right)})\)
  1. Started with
    \[\log_* (1 + {\left(\sinh b\right)}^{\left(\tan^{-1}_* \frac{a}{\sin a}\right)})\]
    5.5
  2. Using strategy rm
    5.5
  3. Applied add-cube-cbrt to get
    \[\log_* (1 + {\color{red}{\left(\sinh b\right)}}^{\left(\tan^{-1}_* \frac{a}{\sin a}\right)}) \leadsto \log_* (1 + {\color{blue}{\left({\left(\sqrt[3]{\sinh b}\right)}^3\right)}}^{\left(\tan^{-1}_* \frac{a}{\sin a}\right)})\]
    5.5

Original test:


(lambda ((a default) (b default))
  #:name "(log1p (pow (sinh b) (atan2 a (sin a))))"
  (log1p (pow (sinh b) (atan2 a (sin a)))))