Average Error: 0.0 → 0.0
Time: 527.0ms
Precision: binary64
\[\left(2 \cdot x\right) \cdot x - 1\]
↓
\[\left(2 \cdot x\right) \cdot x - 1\]
\left(2 \cdot x\right) \cdot x - 1
↓
\left(2 \cdot x\right) \cdot x - 1
double code(double x) {
	return ((double) (((double) (((double) (2.0 * x)) * x)) - 1.0));
}
↓
double code(double x) {
	return ((double) (((double) (((double) (2.0 * x)) * x)) - 1.0));
}

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

    \[\left(2 \cdot x\right) \cdot x - 1\]

  2. Final simplification0.0

    \[\leadsto \left(2 \cdot x\right) \cdot x - 1\]

Reproduce

herbie shell --seed 2020152 
(FPCore (x)
  :name "(- (* (* 2.0 x) x) 1.0)"
  :precision binary64
  (- (* (* 2.0 x) x) 1.0))