#ifndef _STRING_H
#define _STRING_H

#include <stddef.h>

extern void *memcpy(void *dest, const void *src, size_t n);
extern void *memset(void *s, unsigned char c, size_t n);
extern void *memmove(void *dest, const void *src, size_t n);
extern int8_t memcmp(const void *s1, const void *s2, size_t n);

extern char *strcpy(char *dest, const char *src);
extern char *strncpy(char *dest, const char *src, size_t n);
extern size_t strlen(const char *s);
extern int8_t strcmp(const char *s1, const char *s2);
extern int8_t strncmp(const char *s1, const char *s2, size_t n);
extern char * strcat(char *dest, const char *src);

#endif