Average Error: 0 → 0
Time: 323.0ms
Precision: binary64
\[\cos \pi\]
↓
\[-1\]
\cos \pi
↓
-1
double code() {
	return ((double) cos(((double) M_PI)));
}
↓
double code() {
	return -1.0;
}

Error

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Your Program's Arguments

    Results

    Enter valid numbers for all inputs

    Derivation

    1. Initial program 0

      \[\cos \pi\]

    2. Simplified0

      \[\leadsto \color{blue}{-1}\]

    3. Final simplification0

      \[\leadsto -1\]

    Reproduce

    herbie shell --seed 2020152 
(FPCore ()
  :name "(cos PI)"
  :precision binary64
  (cos PI))