#ifndef LICKS_LINALG_H
#define LICKS_LINALG_H

typedef struct {
   double x,y,z;
} vector3d;

typedef struct {
   double x[3],y[3],z[3];
} matrix3x3d;

extern void copy_vector3d(vector3d *v1, vector3d *v2);
extern void add_vector3d(vector3d *v1, vector3d *v2, vector3d *result);
extern void sub_vector3d(vector3d *v1, vector3d *v2, vector3d *result);
extern void scalar_mult_vector3d(vector3d *v1, double s, vector3d *result);
extern void cross_mult_vector3d(vector3d *v1, vector3d *v2, vector3d *result);
extern void matrix_mult_vector3d(vector3d *v1, matrix3x3d *M, vector3d *result);
extern void rot_x_vector3d(vector3d *v, double a, vector3d *result);
extern void rot_y_vector3d(vector3d *v, double a, vector3d *result);
extern void rot_z_vector3d(vector3d *v, double a, vector3d *result);

#endif