From f12a3249af84c903e5ae82dfb4761fe74d2aeac8 Mon Sep 17 00:00:00 2001
From: Felix Lange <fjl@twurst.com>
Date: Sat, 19 Sep 2015 02:23:40 +0200
Subject: [PATCH] rlp: add IntSize

---
 rlp/raw.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/rlp/raw.go b/rlp/raw.go
index 33aae6ee53..8589c9259b 100644
--- a/rlp/raw.go
+++ b/rlp/raw.go
@@ -34,6 +34,13 @@ func ListSize(contentSize uint64) uint64 {
 	return uint64(headsize(contentSize)) + contentSize
 }
 
+func IntSize(i uint64) uint64 {
+	if i < 128 {
+		return 1
+	}
+	return 1 + uint64(intsize(i))
+}
+
 // Split returns the content of first RLP value and any
 // bytes after the value as subslices of b.
 func Split(b []byte) (k Kind, content, rest []byte, err error) {