defs.h

深入理解计算机系统（computer system：a programmer s perpective)是一本非常经典的教材

/*

  defs.h

  Useful definitions for L5.

  DO NOT MODIFY ANYTHING IN THIS FILE

*/

#ifndef _DEFS_H_
#define _DEFS_H_

#include <stdlib.h>

#define RIDX(i,j,n) ((i)*(n)+(j))


typedef struct {
  char *team;
  char *name1, *email1;
  char *name2, *email2;
} team_t;

extern team_t team;


typedef struct {
   unsigned short red;
   unsigned short green;
   unsigned short blue;
} pixel;

typedef void (*lab_test_func) (int, pixel*, pixel*);

void smooth(int, pixel *, pixel *);
void rotate(int, pixel *, pixel *);
void rotate_cache(int, pixel *, pixel *);

void register_rotate_functions(void);
void register_smooth_functions(void);
void add_smooth_function(lab_test_func, char*);
void add_rotate_function(lab_test_func, char*);

#endif /* _DEFS_H_ */