Average Error: 59.9 → 59.9
Time: 2.1s
Precision: binary64
\[{\left(a + 0.25\right)}^{2} - {\left(a - 0.25\right)}^{2}\]
↓
\[{\left(a + 0.25\right)}^{2} - {\left(a - 0.25\right)}^{2}\]
{\left(a + 0.25\right)}^{2} - {\left(a - 0.25\right)}^{2}
↓
{\left(a + 0.25\right)}^{2} - {\left(a - 0.25\right)}^{2}
double code(double a) {
	return ((double) (((double) pow(((double) (a + 0.25)), 2.0)) - ((double) pow(((double) (a - 0.25)), 2.0))));
}
↓
double code(double a) {
	return ((double) (((double) pow(((double) (a + 0.25)), 2.0)) - ((double) pow(((double) (a - 0.25)), 2.0))));
}

Error

Bits error versus a

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 59.9

    \[{\left(a + 0.25\right)}^{2} - {\left(a - 0.25\right)}^{2}\]

  2. Final simplification59.9

    \[\leadsto {\left(a + 0.25\right)}^{2} - {\left(a - 0.25\right)}^{2}\]

Reproduce

herbie shell --seed 2020153 
(FPCore (a)
  :name "(- (pow (+ a 0.25) 2) (pow (- a 0.25) 2))"
  :precision binary64
  (- (pow (+ a 0.25) 2.0) (pow (- a 0.25) 2.0)))