Average Error: 34.5 → 34.7
Time: 14.6s
Precision: 64
\[\left(\left(\cosh c\right) \bmod \left(\mathsf{log1p}\left(a\right)\right)\right)\]
↓
\[e^{\sqrt[3]{{\left(\log \left(\left(\frac{1}{24} \cdot {c}^{4} + \left(\frac{1}{2} \cdot {c}^{2} + 1\right)\right) \bmod \left(\mathsf{log1p}\left(a\right)\right)\right)\right)}^{3}}}\]
\left(\left(\cosh c\right) \bmod \left(\mathsf{log1p}\left(a\right)\right)\right)
↓
e^{\sqrt[3]{{\left(\log \left(\left(\frac{1}{24} \cdot {c}^{4} + \left(\frac{1}{2} \cdot {c}^{2} + 1\right)\right) \bmod \left(\mathsf{log1p}\left(a\right)\right)\right)\right)}^{3}}}
double code(double a, double c) {
	return ((double) fmod(((double) cosh(c)), ((double) log1p(a))));
}
↓
double code(double a, double c) {
	return ((double) exp(((double) cbrt(((double) pow(((double) log(((double) fmod(((double) (((double) (0.041666666666666664 * ((double) pow(c, 4.0)))) + ((double) (((double) (0.5 * ((double) pow(c, 2.0)))) + 1.0)))), ((double) log1p(a)))))), 3.0))))));
}

Error

Bits error versus a

Bits error versus c

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 34.5

    \[\left(\left(\cosh c\right) \bmod \left(\mathsf{log1p}\left(a\right)\right)\right)\]

  2. Taylor expanded around 0 34.7

    \[\leadsto \left(\color{blue}{\left(\frac{1}{24} \cdot {c}^{4} + \left(\frac{1}{2} \cdot {c}^{2} + 1\right)\right)} \bmod \left(\mathsf{log1p}\left(a\right)\right)\right)\]
  3. Using strategy rm

  4. Applied add-exp-log34.7

    \[\leadsto \color{blue}{e^{\log \left(\left(\frac{1}{24} \cdot {c}^{4} + \left(\frac{1}{2} \cdot {c}^{2} + 1\right)\right) \bmod \left(\mathsf{log1p}\left(a\right)\right)\right)}}\]
  5. Using strategy rm

  6. Applied add-cbrt-cube34.7

    \[\leadsto e^{\color{blue}{\sqrt[3]{\left(\log \left(\left(\frac{1}{24} \cdot {c}^{4} + \left(\frac{1}{2} \cdot {c}^{2} + 1\right)\right) \bmod \left(\mathsf{log1p}\left(a\right)\right)\right) \cdot \log \left(\left(\frac{1}{24} \cdot {c}^{4} + \left(\frac{1}{2} \cdot {c}^{2} + 1\right)\right) \bmod \left(\mathsf{log1p}\left(a\right)\right)\right)\right) \cdot \log \left(\left(\frac{1}{24} \cdot {c}^{4} + \left(\frac{1}{2} \cdot {c}^{2} + 1\right)\right) \bmod \left(\mathsf{log1p}\left(a\right)\right)\right)}}}\]

  7. Simplified34.7

    \[\leadsto e^{\sqrt[3]{\color{blue}{{\left(\log \left(\left(\frac{1}{24} \cdot {c}^{4} + \left(\frac{1}{2} \cdot {c}^{2} + 1\right)\right) \bmod \left(\mathsf{log1p}\left(a\right)\right)\right)\right)}^{3}}}}\]

  8. Final simplification34.7

    \[\leadsto e^{\sqrt[3]{{\left(\log \left(\left(\frac{1}{24} \cdot {c}^{4} + \left(\frac{1}{2} \cdot {c}^{2} + 1\right)\right) \bmod \left(\mathsf{log1p}\left(a\right)\right)\right)\right)}^{3}}}\]

Reproduce

herbie shell --seed 2020120 
(FPCore (a c)
  :name "Random Jason Timeout Test 004"
  :precision binary64
  (fmod (cosh c) (log1p a)))