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

libc/string/itoa.c

@@ -0,0 +1,20 @@
+#include <string.h>
+
+// Source: http://www.strudel.org.uk/itoa/
+char* itoa(size_t val, int base) {
+    static char buf[32] = { 0 };
+    
+    if (base == 0 || base > 16) { return NULL; }
+
+    if (val == 0) {
+        buf[0] = '0';
+        return buf;
+    }
+ 
+    int i;
+    for (i = 30; val && i; i--, val /= base) {
+        buf[i] = "0123456789abcdef"[val % base];
+    }
+
+    return &buf[i + 1];
+}