Average Error: 2.1 → 1.7
Time: 3.5s
Precision: binary64
\[\]
↓
\[\]
↓
double code(double x, double y, double z, double t) {
	return ((double) (((double) (((double) (x / y)) * ((double) (z - t)))) + t));
}

↓
double code(double x, double y, double z, double t) {
	double VAR;
	if ((y <= -1.0595863515421569e+87)) {
		VAR = ((double) (t + ((double) (x / ((double) (y / ((double) (z - t))))))));
	} else {
		double VAR_1;
		if ((y <= 3.007497839648298e-58)) {
			VAR_1 = ((double) (t + ((double) (((double) (x * ((double) (z - t)))) / y))));
		} else {
			VAR_1 = ((double) (t + ((double) (((double) (z - t)) * ((double) (x / y))))));
		}
		VAR = VAR_1;
	}
	return VAR;
}

Error
Bits error versus x
Bits error versus y
Bits error versus z
Bits error versus t
Try it out
Your Program's Arguments
Results
Enter valid numbers for all inputs
Target
Original2.1
Target2.4
Herbie1.7
\[\]
Derivation
  1. Split input into 3 regimes
  2. if  y  < -1.0595863515421569e87
    1. Initial program 1.5
      \[\]
    2. Using strategy rm
    3. Applied associate-*l/10.7
      \[\leadsto \]
    4. Using strategy rm
    5. Applied associate-/l*1.5
      \[\leadsto \]
    if -1.0595863515421569e87 <  y  < 3.0074978396482981e-58
    1. Initial program 3.4
      \[\]
    2. Using strategy rm
    3. Applied associate-*l/2.5
      \[\leadsto \]
    if 3.0074978396482981e-58 <  y 
    1. Initial program 1.1
      \[\]
  3. Recombined 3 regimes into one program.
  4. Final simplification1.7
    \[\leadsto \]
Reproduce
herbie shell --seed 2020190 
(FPCore (x y z t)
  :name "Numeric.Signal.Multichannel:$cget from hsignal-0.2.7.1"
  :precision binary64

  :herbie-target
  (if (< z 2.759456554562692e-282) (+ (* (/ x y) (- z t)) t) (if (< z 2.326994450874436e-110) (+ (* x (/ (- z t) y)) t) (+ (* (/ x y) (- z t)) t)))

  (+ (* (/ x y) (- z t)) t))