__extern void *memset(void *, int, size_t);
__extern void *memmem(const void *, size_t, const void *, size_t);
__extern void memswap(void *, void *, size_t);
+__extern int strcasecmp(const char *, const char *);
+__extern int strncasecmp(const char *, const char *, size_t);
__extern char *strcat(char *, const char *);
__extern char *strchr(const char *, int);
__extern int strcmp(const char *, const char *);
__extern char *strcpy(char *, const char *);
__extern size_t strcspn(const char *, const char *);
__extern char *strdup(const char *);
+__extern char *strndup(const char *, size_t);
__extern char *strerror(int);
__extern size_t strlen(const char *);
__extern char *strncat(char *, const char *, size_t);