#ifndef _PP2D_DEF
#define _PP2D_DEF

double   clamped(double val,double min,double max);
void     help(void);
void     badstream_exit(char *s);
void     getinput(void);
void     idle(void);
void     keyboard(unsigned char key,int x, int y);
void     special(int key, int x, int y );
void     reshape(int nw, int nh);
void     display(void);

#endif