Average Error: 0.0 → 0.0
Time: 7.4s
Precision: 64
\[\frac{2}{e^{x} + e^{-x}}\]
↓
\[\frac{2}{e^{x} + e^{-x}}\]
\frac{2}{e^{x} + e^{-x}}
↓
\frac{2}{e^{x} + e^{-x}}
double f(double x) {
        double r54437 = 2.0;
        double r54438 = x;
        double r54439 = exp(r54438);
        double r54440 = -r54438;
        double r54441 = exp(r54440);
        double r54442 = r54439 + r54441;
        double r54443 = r54437 / r54442;
        return r54443;
}
↓
double f(double x) {
        double r54444 = 2.0;
        double r54445 = x;
        double r54446 = exp(r54445);
        double r54447 = -r54445;
        double r54448 = exp(r54447);
        double r54449 = r54446 + r54448;
        double r54450 = r54444 / r54449;
        return r54450;
}

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

    \[\frac{2}{e^{x} + e^{-x}}\]

  2. Final simplification0.0

    \[\leadsto \frac{2}{e^{x} + e^{-x}}\]

Reproduce

herbie shell --seed 2019195 
(FPCore (x)
  :name "Hyperbolic secant"
  (/ 2.0 (+ (exp x) (exp (- x)))))