Average Error: 0.5 → 0.5
Time: 7.3s
Precision: binary64
\[\frac{1}{\sqrt{k}} \cdot {\left(\left(2 \cdot \pi\right) \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}\]
↓
\[1 \cdot \frac{1}{\frac{1}{{\pi}^{\left(\frac{1 - k}{2}\right)}} \cdot \frac{\sqrt{k}}{{\left(2 \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}}}\]
\frac{1}{\sqrt{k}} \cdot {\left(\left(2 \cdot \pi\right) \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}
↓
1 \cdot \frac{1}{\frac{1}{{\pi}^{\left(\frac{1 - k}{2}\right)}} \cdot \frac{\sqrt{k}}{{\left(2 \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}}}
double code(double k, double n) {
	return ((double) ((1.0 / ((double) sqrt(k))) * ((double) pow(((double) (((double) (2.0 * ((double) M_PI))) * n)), (((double) (1.0 - k)) / 2.0)))));
}
↓
double code(double k, double n) {
	return ((double) (1.0 * (1.0 / ((double) ((1.0 / ((double) pow(((double) M_PI), (((double) (1.0 - k)) / 2.0)))) * (((double) sqrt(k)) / ((double) pow(((double) (2.0 * n)), (((double) (1.0 - k)) / 2.0)))))))));
}

Error

Bits error versus k

Bits error versus n

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.5

    \[\frac{1}{\sqrt{k}} \cdot {\left(\left(2 \cdot \pi\right) \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}\]

  2. Simplified0.4

    \[\leadsto \color{blue}{1 \cdot \frac{{\left(2 \cdot \left(\pi \cdot n\right)\right)}^{\left(\frac{1 - k}{2}\right)}}{\sqrt{k}}}\]
  3. Using strategy rm

  4. Applied clear-num0.5

    \[\leadsto 1 \cdot \color{blue}{\frac{1}{\frac{\sqrt{k}}{{\left(2 \cdot \left(\pi \cdot n\right)\right)}^{\left(\frac{1 - k}{2}\right)}}}}\]

  5. Simplified0.5

    \[\leadsto 1 \cdot \frac{1}{\color{blue}{\frac{\sqrt{k}}{{\left(\pi \cdot \left(2 \cdot n\right)\right)}^{\left(\frac{1 - k}{2}\right)}}}}\]
  6. Using strategy rm

  7. Applied unpow-prod-down0.6

    \[\leadsto 1 \cdot \frac{1}{\frac{\sqrt{k}}{\color{blue}{{\pi}^{\left(\frac{1 - k}{2}\right)} \cdot {\left(2 \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}}}}\]

  8. Applied *-un-lft-identity0.6

    \[\leadsto 1 \cdot \frac{1}{\frac{\sqrt{\color{blue}{1 \cdot k}}}{{\pi}^{\left(\frac{1 - k}{2}\right)} \cdot {\left(2 \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}}}\]

  9. Applied sqrt-prod0.6

    \[\leadsto 1 \cdot \frac{1}{\frac{\color{blue}{\sqrt{1} \cdot \sqrt{k}}}{{\pi}^{\left(\frac{1 - k}{2}\right)} \cdot {\left(2 \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}}}\]

  10. Applied times-frac0.5

    \[\leadsto 1 \cdot \frac{1}{\color{blue}{\frac{\sqrt{1}}{{\pi}^{\left(\frac{1 - k}{2}\right)}} \cdot \frac{\sqrt{k}}{{\left(2 \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}}}}\]

  11. Simplified0.5

    \[\leadsto 1 \cdot \frac{1}{\color{blue}{\frac{1}{{\pi}^{\left(\frac{1 - k}{2}\right)}}} \cdot \frac{\sqrt{k}}{{\left(2 \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}}}\]

  12. Final simplification0.5

    \[\leadsto 1 \cdot \frac{1}{\frac{1}{{\pi}^{\left(\frac{1 - k}{2}\right)}} \cdot \frac{\sqrt{k}}{{\left(2 \cdot n\right)}^{\left(\frac{1 - k}{2}\right)}}}\]

Reproduce

herbie shell --seed 2020196 
(FPCore (k n)
  :name "Migdal et al, Equation (51)"
  :precision binary64
  (* (/ 1.0 (sqrt k)) (pow (* (* 2.0 PI) n) (/ (- 1.0 k) 2.0))))