int memcmp3(void *mem1, void *mem2, unsigned int n);
int memcmp(const void *s1, const void *s2, unsigned int n);
int strcmp_ignore_case( unsigned char*, unsigned char* );
int strlen( const char* );
void *memcpy(void *dest, const void *source, unsigned int n);
void *memset(void *dest, int c, unsigned int n);
