init

hex.h

@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+static const char hext[] = "0123456789ABCDEF";
+static void printhex(const char *z, size_t l)
+{
+	printf("[");
+	for (size_t i = 0; i < l; ++i) {
+		printf("%c%c", hext[*z >> 4], hext[*z & 0xF]);
+		++z;
+	}
+	printf("]\n");
+}