Average Error: 2.1 → 0.5
Time: 8.6s
Precision: binary64
\[\]
↓
\[\]
↓
double code(double x, double y, double z, double t, double a, double b) {
	return ((double) (x * ((double) exp(((double) (((double) (y * ((double) (((double) log(z)) - t)))) + ((double) (a * ((double) (((double) log(((double) (1.0 - z)))) - b))))))))));
}

↓
double code(double x, double y, double z, double t, double a, double b) {
	return ((double) (x * ((double) exp(((double) (((double) (y * ((double) (((double) log(z)) - t)))) + ((double) (a * ((double) (((double) (((double) log(1.0)) + ((double) (((double) (((double) (((double) (z / 1.0)) * ((double) (z / 1.0)))) * -0.5)) - ((double) (z * 1.0)))))) - b))))))))));
}

Error
Bits error versus x
Bits error versus y
Bits error versus z
Bits error versus t
Bits error versus a
Bits error versus b
Try it out
Your Program's Arguments
Results
Enter valid numbers for all inputs
Derivation
  1. Initial program 2.1
    \[\]
  2. Taylor expanded around 0 0.5
    \[\leadsto \]
  3. Simplified0.5
    \[\leadsto \]
  4. Final simplification0.5
    \[\leadsto \]
Reproduce
herbie shell --seed 2020192 
(FPCore (x y z t a b)
  :name "Numeric.SpecFunctions:incompleteBetaApprox from math-functions-0.1.5.2, B"
  :precision binary64
  (* x (exp (+ (* y (- (log z) t)) (* a (- (log (- 1.0 z)) b))))))