Average Error: 0.0 → 0.0
Time: 735.0ms
Precision: binary64
\[\mathsf{erf}\left(\left(1 - x \cdot x\right)\right)\]
↓
\[\mathsf{erf}\left(\left(1 - x \cdot x\right)\right)\]
\mathsf{erf}\left(\left(1 - x \cdot x\right)\right)
↓
\mathsf{erf}\left(\left(1 - x \cdot x\right)\right)
double code(double x) {
	return ((double) erf(((double) (1.0 - ((double) (x * x))))));
}
↓
double code(double x) {
	return ((double) erf(((double) (1.0 - ((double) (x * 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

    \[\mathsf{erf}\left(\left(1 - x \cdot x\right)\right)\]

  2. Final simplification0.0

    \[\leadsto \mathsf{erf}\left(\left(1 - x \cdot x\right)\right)\]

Reproduce

herbie shell --seed 2020152 
(FPCore (x)
  :name "(erf (- 1 (* x x)))"
  :precision binary64
  (erf (- 1.0 (* x x))))