\left(x \cdot \log y - z\right) - y
\left(\log \left(\left({\left({\left({y}^{\frac{1}{3}}\right)}^{\left(\sqrt[3]{\frac{2}{3}} \cdot \sqrt[3]{\frac{2}{3}}\right)}\right)}^{\left(\sqrt[3]{\frac{2}{3}}\right)} \cdot {\left(\sqrt[3]{y}\right)}^{\frac{1}{3}}\right) \cdot \sqrt[3]{y}\right) \cdot x + \left(\log \left(1 \cdot {y}^{\frac{1}{3}}\right) \cdot x - z\right)\right) - ydouble f(double x, double y, double z) {
double r27842 = x;
double r27843 = y;
double r27844 = log(r27843);
double r27845 = r27842 * r27844;
double r27846 = z;
double r27847 = r27845 - r27846;
double r27848 = r27847 - r27843;
return r27848;
}
double f(double x, double y, double z) {
double r27849 = y;
double r27850 = 0.3333333333333333;
double r27851 = pow(r27849, r27850);
double r27852 = 0.6666666666666666;
double r27853 = cbrt(r27852);
double r27854 = r27853 * r27853;
double r27855 = pow(r27851, r27854);
double r27856 = pow(r27855, r27853);
double r27857 = cbrt(r27849);
double r27858 = pow(r27857, r27850);
double r27859 = r27856 * r27858;
double r27860 = r27859 * r27857;
double r27861 = log(r27860);
double r27862 = x;
double r27863 = r27861 * r27862;
double r27864 = 1.0;
double r27865 = r27864 * r27851;
double r27866 = log(r27865);
double r27867 = r27866 * r27862;
double r27868 = z;
double r27869 = r27867 - r27868;
double r27870 = r27863 + r27869;
double r27871 = r27870 - r27849;
return r27871;
}



Bits error versus x



Bits error versus y



Bits error versus z
Results
Initial program 0.1
rmApplied add-cube-cbrt0.1
Applied log-prod0.1
Applied distribute-rgt-in0.1
Applied associate--l+0.1
rmApplied *-un-lft-identity0.1
Applied cbrt-prod0.1
Simplified0.1
Simplified0.1
rmApplied add-cube-cbrt0.1
Simplified0.1
Simplified0.2
rmApplied add-cube-cbrt0.1
Applied pow-unpow0.1
Final simplification0.1
herbie shell --seed 2020057 +o rules:numerics
(FPCore (x y z)
:name "Statistics.Distribution.Poisson:$clogProbability from math-functions-0.1.5.2"
:precision binary64
(- (- (* x (log y)) z) y))