I am trying t model a sun position algorithm in simulink and i used the embedded matlab function. My simulation time is 10*3600s. The function includes:
function [altitude, azimuth]= fcn(N, SL, LL, L, LST)
However, when i use the 'asind' instead of 'asin' for the 'azimuth=asind(cosd(delta)*sind(h)/cosd(altitude))' equation, the simulation becomes extremely slow and i never get an answer. When i use asin I get an answer very quickly, though it is not correct since it is in radians instead of degrees. Does anyone know any potential reason for this extremely slow running?