Average Error: 39.3 → 39.3
Time: 930.0ms
Precision: binary64
\[\sqrt{x + 4} - 2\]
↓
\[\sqrt{x + 4} - 2\]
\sqrt{x + 4} - 2
↓
\sqrt{x + 4} - 2
double code(double x) {
	return ((double) (((double) sqrt(((double) (x + 4.0)))) - 2.0));
}
↓
double code(double x) {
	return ((double) (((double) sqrt(((double) (x + 4.0)))) - 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 39.3

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

  2. Final simplification39.3

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

Reproduce

herbie shell --seed 2020152 
(FPCore (x)
  :name "(- (sqrt (+ x 4)) 2)"
  :precision binary64
  (- (sqrt (+ x 4.0)) 2.0))