\frac{\sin ky}{\sqrt{{\left(\sin kx\right)}^{2} + {\left(\sin ky\right)}^{2}}} \cdot \sin th\frac{\sin ky}{{\left({\left(\sin kx\right)}^{2} + {\left(\sin ky\right)}^{2}\right)}^{\frac{1}{2}}} \cdot \sin thdouble code(double kx, double ky, double th) {
return ((double) ((((double) sin(ky)) / ((double) sqrt(((double) (((double) pow(((double) sin(kx)), 2.0)) + ((double) pow(((double) sin(ky)), 2.0))))))) * ((double) sin(th))));
}
double code(double kx, double ky, double th) {
return ((double) ((((double) sin(ky)) / ((double) pow(((double) (((double) pow(((double) sin(kx)), 2.0)) + ((double) pow(((double) sin(ky)), 2.0)))), 0.5))) * ((double) sin(th))));
}



Bits error versus kx



Bits error versus ky



Bits error versus th
Results
Initial program 3.8
rmApplied pow1/23.8
Final simplification3.8
herbie shell --seed 2020182
(FPCore (kx ky th)
:name "Toniolo and Linder, Equation (3b), real"
:precision binary64
(* (/ (sin ky) (sqrt (+ (pow (sin kx) 2.0) (pow (sin ky) 2.0)))) (sin th)))