Average Error: 0.0 → 0.0
Time: 751.0ms
Precision: 64
\[e^{-\left(1 - x \cdot x\right)}\]
↓
\[e^{-\left(1 - x \cdot x\right)}\]
e^{-\left(1 - x \cdot x\right)}
↓
e^{-\left(1 - x \cdot x\right)}
double f(double x) {
        double r17249 = 1.0;
        double r17250 = x;
        double r17251 = r17250 * r17250;
        double r17252 = r17249 - r17251;
        double r17253 = -r17252;
        double r17254 = exp(r17253);
        return r17254;
}
↓
double f(double x) {
        double r17255 = 1.0;
        double r17256 = x;
        double r17257 = r17256 * r17256;
        double r17258 = r17255 - r17257;
        double r17259 = -r17258;
        double r17260 = exp(r17259);
        return r17260;
}

Error

Bits error versus x

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.0

    \[e^{-\left(1 - x \cdot x\right)}\]

  2. Final simplification0.0

    \[\leadsto e^{-\left(1 - x \cdot x\right)}\]

Reproduce

herbie shell --seed 2020021 
(FPCore (x)
  :name "exp neg sub"
  :precision binary64
  (exp (- (- 1 (* x x)))))