2 void fps_reverse(unsigned char *dest, unsigned char *from, unsigned long len);
3 void fps_intersperse(unsigned char *dest, unsigned char *from, unsigned long len, unsigned char c);
4 unsigned char fps_maximum(unsigned char *p, unsigned long len);
5 unsigned char fps_minimum(unsigned char *p, unsigned long len);
6 unsigned long fps_count(unsigned char *p, unsigned long len, unsigned char w);