4 void memcpy(void *dest, void *src, int bytes);
5 void memmove(void *dest, void *src, int bytes);
6 int strcmp(const char *a2, const char *a1);
7 void strcpy(char *a2, const char *a1);
8 void tohex(char *s, unsigned long l);
10 void puts(const char *c);
11 void puthex(unsigned long l);