Average Error: 0.0 → 0.0
Time: 41.9s
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 r10911225 = 2.0;
        double r10911226 = x;
        double r10911227 = exp(r10911226);
        double r10911228 = -r10911226;
        double r10911229 = exp(r10911228);
        double r10911230 = r10911227 + r10911229;
        double r10911231 = r10911225 / r10911230;
        return r10911231;
}
↓
double f(double x) {
        double r10911232 = 2.0;
        double r10911233 = x;
        double r10911234 = exp(r10911233);
        double r10911235 = -r10911233;
        double r10911236 = exp(r10911235);
        double r10911237 = r10911234 + r10911236;
        double r10911238 = r10911232 / r10911237;
        return r10911238;
}

Error

Bits error versus x

Try it out

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 2019120 
(FPCore (x)
  :name "Hyperbolic secant"
  (/ 2 (+ (exp x) (exp (- x)))))