Average Error: 0 → 0
Time: 702.0ms
Precision: 64
\[\tan^{-1}_* \frac{im}{re}\]
↓
\[\tan^{-1}_* \frac{im}{re}\]
\tan^{-1}_* \frac{im}{re}
↓
\tan^{-1}_* \frac{im}{re}
double f(double re, double im) {
        double r695911 = im;
        double r695912 = re;
        double r695913 = atan2(r695911, r695912);
        return r695913;
}
↓
double f(double re, double im) {
        double r695914 = im;
        double r695915 = re;
        double r695916 = atan2(r695914, r695915);
        return r695916;
}

Error

Bits error versus re

Bits error versus im

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0

    \[\tan^{-1}_* \frac{im}{re}\]

  2. Final simplification0

    \[\leadsto \tan^{-1}_* \frac{im}{re}\]

Reproduce

herbie shell --seed 2019153 +o rules:numerics
(FPCore (re im)
  :name "math.arg on complex"
  (atan2 im re))