Average Error: 29.9 → 29.9
Time: 3.5s
Precision: binary64
\[\log \left(1 - {x}^{2}\right)\]
↓
\[\log \left(1 - {x}^{2}\right)\]
\log \left(1 - {x}^{2}\right)
↓
\log \left(1 - {x}^{2}\right)
double code(double x) {
	return ((double) log(((double) (1.0 - ((double) pow(x, 2.0))))));
}
↓
double code(double x) {
	return ((double) log(((double) (1.0 - ((double) pow(x, 2.0))))));
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 29.9

    \[\log \left(1 - {x}^{2}\right)\]

  2. Final simplification29.9

    \[\leadsto \log \left(1 - {x}^{2}\right)\]

Reproduce

herbie shell --seed 2020152 
(FPCore (x)
  :name "(log (- 1 (pow x 2)))"
  :precision binary64
  (log (- 1.0 (pow x 2.0))))