root/vector2.h

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INCLUDED FROM


   1 /* vector2.h */
   2 #ifndef _VECTOR2_H_
   3 #define _VECTOR2_H_
   4 typedef struct vector2{
   5   double x;
   6   double y;
   7 } vector2;
   8 
   9 vector2 makevector2(double x, double y);
  10 vector2 vec2plus(vector2 a, vector2 b);
  11 void vec2add(vector2* a, vector2* b);
  12 vector2 vec2minus(vector2 a, vector2 b);
  13 void vec2subtract(vector2* a, vector2* b);
  14 double vec2dot(vector2 a, vector2 b);
  15 
  16 #endif
  17 

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