1 files changed, 3 insertions, 2 deletions
diff --git a/std.h b/std.h
index 7f6d663..c1dcd66 100644
--- a/std.h
+++ b/std.h
@@ -19,8 +19,8 @@ int isalnum(int);
 int isalpha(int);
 int isdigit(int);
 int isspace(int);
-void* memcpy(void*, void*, size_t);
-void* memmove(void*, void*, size_t);
+void* memcpy(void*, const void*, size_t);
+void* memmove(void*, const void*, size_t);
 void* memset(void*, int, size_t);
 int printf(const char*, ...);
 void* realloc(void*, size_t);
@@ -28,6 +28,7 @@ int sprintf(char*, const char*, ...);
 int strcmp(const char*, const char*);
 size_t strlen(const char*);
 int strncmp(const char*, const char*, size_t);
+char* strndup(const char*, size_t);
 char* strstr(const char*, const char*);
 
 #include <stdarg.h>