\[\left(\log d + \left|c\right|\right) \cdot \tan d\]
Test:
(* (+ (log d) (fabs c)) (tan d))
Bits:
128 bits
Bits error versus a
Bits error versus b
Bits error versus c
Bits error versus d
Time: 10.4 s
Input Error: 0.2
Output Error: 0.2
Log: ⚲
Profile: 🕒
\(\left(\log d + \left|c\right|\right) \cdot \tan d\)
  1. Started with
    \[\left(\log d + \left|c\right|\right) \cdot \tan d\]
    0.2
  2. Removed slow pow expressions

Original test:


(lambda ((a default) (b default) (c default) (d default))
  #:name "(* (+ (log d) (fabs c)) (tan d))"
  (* (+ (log d) (fabs c)) (tan d)))