Average Error: 0.2 → 0.2
Time: 3.5s
Precision: 64
\[\frac{a}{-\cos^{-1} a}\]
↓
\[\frac{a}{-\cos^{-1} a}\]
\frac{a}{-\cos^{-1} a}
↓
\frac{a}{-\cos^{-1} a}
double f(double a) {
        double r167091 = a;
        double r167092 = acos(r167091);
        double r167093 = -r167092;
        double r167094 = r167091 / r167093;
        return r167094;
}
↓
double f(double a) {
        double r167095 = a;
        double r167096 = acos(r167095);
        double r167097 = -r167096;
        double r167098 = r167095 / r167097;
        return r167098;
}

Error

Bits error versus a

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Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.2

    \[\frac{a}{-\cos^{-1} a}\]

  2. Final simplification0.2

    \[\leadsto \frac{a}{-\cos^{-1} a}\]

Reproduce

herbie shell --seed 2020003 
(FPCore (a)
  :name "Fuzzer 001"
  :precision binary64
  (/ a (- (acos a))))