Average Error: 46.9 → 46.9
Time: 2.4s
Precision: binary64
\[\frac{1 - {\left(x - 1\right)}^{4}}{24}\]
↓
\[\frac{1 - {\left(x - 1\right)}^{4}}{24}\]
\frac{1 - {\left(x - 1\right)}^{4}}{24}
↓
\frac{1 - {\left(x - 1\right)}^{4}}{24}
double code(double x) {
	return ((double) (((double) (1.0 - ((double) pow(((double) (x - 1.0)), 4.0)))) / 24.0));
}
↓
double code(double x) {
	return ((double) (((double) (1.0 - ((double) pow(((double) (x - 1.0)), 4.0)))) / 24.0));
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 46.9

    \[\frac{1 - {\left(x - 1\right)}^{4}}{24}\]

  2. Final simplification46.9

    \[\leadsto \frac{1 - {\left(x - 1\right)}^{4}}{24}\]

Reproduce

herbie shell --seed 2020153 
(FPCore (x)
  :name "(/ (- 1 (pow (- x 1) 4)) 24)"
  :precision binary64
  (/ (- 1.0 (pow (- x 1.0) 4.0)) 24.0))