\frac{\frac{\frac{\left(\alpha + \beta\right) \cdot \left(\beta - \alpha\right)}{\left(\alpha + \beta\right) + 2 \cdot i}}{\left(\left(\alpha + \beta\right) + 2 \cdot i\right) + 2} + 1}{2}\begin{array}{l}
\mathbf{if}\;\alpha \le 3.88039907736905696 \cdot 10^{195}:\\
\;\;\;\;\frac{\frac{\frac{{\left({\left(\frac{\left(\alpha + \beta\right) \cdot \frac{\beta - \alpha}{\left(\alpha + \beta\right) + 2 \cdot i}}{\left(\left(\alpha + \beta\right) + 2 \cdot i\right) + 2}\right)}^{2} \cdot \frac{\left(\alpha + \beta\right) \cdot \frac{\beta - \alpha}{\left(\alpha + \beta\right) + 2 \cdot i}}{\left(\left(\alpha + \beta\right) + 2 \cdot i\right) + 2}\right)}^{3} + {\left({1}^{3}\right)}^{3}}{{1}^{6} - \left({1}^{3} \cdot {\left(\frac{\left(\alpha + \beta\right) \cdot \frac{\beta - \alpha}{\left(\alpha + \beta\right) + 2 \cdot i}}{\left(\left(\alpha + \beta\right) + 2 \cdot i\right) + 2}\right)}^{3} - {\left(\frac{\left(\alpha + \beta\right) \cdot \frac{\beta - \alpha}{\left(\alpha + \beta\right) + 2 \cdot i}}{\left(\left(\alpha + \beta\right) + 2 \cdot i\right) + 2}\right)}^{6}\right)}}{1 \cdot \left(1 - \frac{\left(\alpha + \beta\right) \cdot \frac{\beta - \alpha}{\left(\alpha + \beta\right) + 2 \cdot i}}{\left(\left(\alpha + \beta\right) + 2 \cdot i\right) + 2}\right) + \frac{\left(\alpha + \beta\right) \cdot \frac{\beta - \alpha}{\left(\alpha + \beta\right) + 2 \cdot i}}{\left(\left(\alpha + \beta\right) + 2 \cdot i\right) + 2} \cdot \frac{\left(\alpha + \beta\right) \cdot \frac{\beta - \alpha}{\left(\alpha + \beta\right) + 2 \cdot i}}{\left(\left(\alpha + \beta\right) + 2 \cdot i\right) + 2}}}{2}\\
\mathbf{else}:\\
\;\;\;\;\frac{\left(8 \cdot \frac{1}{{\alpha}^{3}} - 4 \cdot \frac{1}{{\alpha}^{2}}\right) + \frac{2}{\alpha}}{2}\\
\end{array}double code(double alpha, double beta, double i) {
return ((double) (((double) (((double) (((double) (((double) (((double) (alpha + beta)) * ((double) (beta - alpha)))) / ((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))))) / ((double) (((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))) + 2.0)))) + 1.0)) / 2.0));
}
double code(double alpha, double beta, double i) {
double VAR;
if ((alpha <= 3.880399077369057e+195)) {
VAR = ((double) (((double) (((double) (((double) (((double) pow(((double) (((double) pow(((double) (((double) (((double) (alpha + beta)) * ((double) (((double) (beta - alpha)) / ((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))))))) / ((double) (((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))) + 2.0)))), 2.0)) * ((double) (((double) (((double) (alpha + beta)) * ((double) (((double) (beta - alpha)) / ((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))))))) / ((double) (((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))) + 2.0)))))), 3.0)) + ((double) pow(((double) pow(1.0, 3.0)), 3.0)))) / ((double) (((double) pow(1.0, 6.0)) - ((double) (((double) (((double) pow(1.0, 3.0)) * ((double) pow(((double) (((double) (((double) (alpha + beta)) * ((double) (((double) (beta - alpha)) / ((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))))))) / ((double) (((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))) + 2.0)))), 3.0)))) - ((double) pow(((double) (((double) (((double) (alpha + beta)) * ((double) (((double) (beta - alpha)) / ((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))))))) / ((double) (((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))) + 2.0)))), 6.0)))))))) / ((double) (((double) (1.0 * ((double) (1.0 - ((double) (((double) (((double) (alpha + beta)) * ((double) (((double) (beta - alpha)) / ((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))))))) / ((double) (((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))) + 2.0)))))))) + ((double) (((double) (((double) (((double) (alpha + beta)) * ((double) (((double) (beta - alpha)) / ((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))))))) / ((double) (((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))) + 2.0)))) * ((double) (((double) (((double) (alpha + beta)) * ((double) (((double) (beta - alpha)) / ((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))))))) / ((double) (((double) (((double) (alpha + beta)) + ((double) (2.0 * i)))) + 2.0)))))))))) / 2.0));
} else {
VAR = ((double) (((double) (((double) (((double) (8.0 * ((double) (1.0 / ((double) pow(alpha, 3.0)))))) - ((double) (4.0 * ((double) (1.0 / ((double) pow(alpha, 2.0)))))))) + ((double) (2.0 / alpha)))) / 2.0));
}
return VAR;
}



Bits error versus alpha



Bits error versus beta



Bits error versus i
Results
if alpha < 3.88039907736905696e195Initial program 18.5
rmApplied *-un-lft-identity18.5
Applied times-frac7.2
Simplified7.2
rmApplied flip3-+7.2
Simplified7.2
rmApplied add-cube-cbrt7.3
Applied unpow-prod-down7.3
Simplified7.2
Simplified7.2
rmApplied flip3-+7.2
Simplified7.2
if 3.88039907736905696e195 < alpha Initial program 64.0
rmApplied *-un-lft-identity64.0
Applied times-frac48.8
Simplified48.8
Taylor expanded around inf 41.6
Simplified41.6
Final simplification11.7
herbie shell --seed 2020162
(FPCore (alpha beta i)
:name "Octave 3.8, jcobi/2"
:precision binary64
:pre (and (> alpha -1.0) (> beta -1.0) (> i 0.0))
(/ (+ (/ (/ (* (+ alpha beta) (- beta alpha)) (+ (+ alpha beta) (* 2.0 i))) (+ (+ (+ alpha beta) (* 2.0 i)) 2.0)) 1.0) 2.0))