Average Error: 14.6 → 0.3
Time: 4.1s
Precision: binary64
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double code(double N) {
	return ((double) (((double) atan(((double) (N + 1.0)))) - ((double) atan(N))));
}
double code(double N) {
	return ((double) atan2(1.0, ((double) (1.0 + ((double) (N * ((double) (1.0 + N))))))));
}

Error

Bits error versus N

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original14.6
Target0.3
Herbie0.3
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Derivation

  1. Initial program 14.6

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  2. Using strategy rm
  3. Applied diff-atan13.6

    \[\leadsto \]
  4. Simplified0.3

    \[\leadsto \]
  5. Simplified0.3

    \[\leadsto \]
  6. Final simplification0.3

    \[\leadsto \]

Reproduce

herbie shell --seed 2020191 
(FPCore (N)
  :name "2atan (example 3.5)"
  :precision binary64

  :herbie-target
  (atan (/ 1.0 (+ 1.0 (* N (+ N 1.0)))))

  (- (atan (+ N 1.0)) (atan N)))