Changed libc structure, shouldn't've added anything new

libc/string/atoi.c

@@ -0,0 +1,13 @@
+#include <string.h>
+
+unsigned int atoi(const char* str) {
+    unsigned int res = 0;
+
+    // TODO: Add error checking
+
+    while (*str >= '0' && *str <= '9') {
+        res = res * 10 + (*str++ - '0');
+    }
+
+    return res;
+}