Added micro sim cpp file

Author: davidcortesortuno

native/include/c_micro_sim.h

@@ -40,3 +40,11 @@ class MicroSim {
     void add_interaction(void * interaction);
 
 };
+
+enum EnergyTermIDs {
+  NONE = 0,
+  EXCHANGE,
+  DMI,
+  ZEEMAN,
+  UNIAXIAL_ANISOTROPY
+};

native/src/c_micro_sim.cpp

@@ -0,0 +1,37 @@
+#include "c_micro_sim.h"
+#include "c_constants.h"
+
+
+void MicroSim::setup(int nx, int ny, int nz, double dx, double dy, double dz,
+                     double unit_length, double *coordinates, int *ngbs, 
+                     double *spin, double *Ms, double *Ms_inv, 
+                     double *energy, double *field, double *pins
+                     ) {
+
+    this->nx = nx;
+    this->ny = ny;
+    this->nz = nz;
+    this->n = nx * ny * nz;
+    this->dx = dx;
+    this->dy = dy;
+    this->dz = dz;
+    this->unit_length = unit_length;
+    this->coordinates = coordinates;
+    this->ngbs = ngbs;
+
+    this->spin = spin;
+    this->Ms = Ms;
+    this->Ms_inv = Ms_inv;
+    this->energy = energy;
+    this->field = field;
+    this->pins = pins;
+
+    set_up = true;
+}
+
+void MicroSim::add_interaction(void * interaction_ptr, int int_id) {
+    
+    interactions.push_back(interaction_ptr);
+    interactions_id.push_back(int_id);
+
+}