text: #ifndef __LIBNO_STRING_H__
  #define __LIBNO_STRING_H__
  
  #include <stddef.h>
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  int memcmp(const void *, const void *, size_t);
  void *memcpy(void *__restrict, const void *__restrict, size_t);
  void *memmove(void *, const void *, size_t);
  void *memset(void *, int, size_t);
  size_t strlen(const char *);
  void strrev(char *str);
  char *strcpy(char *dst, const char *src);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  