reduced flop count

forces.hpp

@@ -12,35 +12,59 @@ const double V0_AB = 2.1;
 // $\sigma$
 const double SIGMA = 0.3;
 
+//
+// $\frac{V^0_{\alpha\beta}}{\sigma}$
+// 
+const double V0_AB_div_SIGMA =  V0_AB / SIGMA;
+
 // $U^0_{\alpha B}$
 const double U0_AB = 10.0;
 
 // $R$
 const double R = 0.2;
 
+// 
+// $\frac{U^0_{\alpha B}}{R}$
+// 
+const double U0_AB_div_R = U0_AB / R;
+
 // $c$
 const double c = 0.5;
 
 // $\varphi$
 const double phi = 45.0 / 180.0 * M_PI;
 
+// $cos(\varphi)$
 const double cos_phi = cos(phi);
 
+// $<v^0>$
+const double v0_mean = 1.34;
+
+// $\sqrt{\theta}$
+const double v0_std_dev = 0.26;
+
 // $\varDelta_{t}$
-// step size = 0.2 seconds
 const double delta_t = 2;
 
+// $dt$
 const double dt = 0.2;
 
-// # Optional (forces.cpp: compute_repulsive_effects_from_pedestrians)
-// const double DISTANCE = 2.0;
+const double cost_add = 1;
+const double cost_mult = 1;
+const double cost_div = 1;
+
+// https://acl.inf.ethz.ch/teaching/fastcode/knowledgebase/#:~:text=How%20do%20exp(x)%2C%20sin(x)%2C%20etc.%20count%20in%20the%20flopcount%20of%20an%20algorithm%3F
+const double cost_exp = 30;
+
+// -O3 maps each sqrt() call to an instruction
+const double cost_sqrt = 1;
 
 double w(Vector2d e, Vector2d f);
 
 double g(double v_max_alpha, double w_alpha_norm);
 
-void compute_acceleration_term(Pedestrian *p);
+void add_acceleration_term(Pedestrian *p);
 
-void compute_repulsive_effects_from_pedestrians(Pedestrian *P, Pedestrian *p, int N);
+void add_repulsive_effects_from_pedestrians(Pedestrian *P, Pedestrian *p, int N);
 
-void compute_repulsive_effects_from_borders(Board &B, Pedestrian *p);
+void add_repulsive_effects_from_borders(Board &B, Pedestrian *p);