Average Error: 0.0 → 0.0
Time: 815.0ms
Precision: binary64
\[\sqrt{4 - \sqrt{2 - x}}\]
↓
\[\sqrt{4 - \sqrt{2 - x}}\]
\sqrt{4 - \sqrt{2 - x}}
↓
\sqrt{4 - \sqrt{2 - x}}
double code(double x) {
	return ((double) sqrt(((double) (4.0 - ((double) sqrt(((double) (2.0 - x))))))));
}
↓
double code(double x) {
	return ((double) sqrt(((double) (4.0 - ((double) sqrt(((double) (2.0 - x))))))));
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.0

    \[\sqrt{4 - \sqrt{2 - x}}\]

  2. Final simplification0.0

    \[\leadsto \sqrt{4 - \sqrt{2 - x}}\]

Reproduce

herbie shell --seed 2020153 
(FPCore (x)
  :name "(sqrt (- 4 (sqrt (- 2 x))))"
  :precision binary64
  (sqrt (- 4.0 (sqrt (- 2.0 x)))))