From 162b9961759ad056c8fff61a9ead67a04439002a Mon Sep 17 00:00:00 2001
From: thomas <thomas.oberbichler@gmail.com>
Date: Fri, 29 May 2020 08:27:48 +0200
Subject: [PATCH] Fix size

---
 include/hyperjet/detail/jet.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/hyperjet/detail/jet.h b/include/hyperjet/detail/jet.h
index bd9c8f6..a33213f 100644
--- a/include/hyperjet/detail/jet.h
+++ b/include/hyperjet/detail/jet.h
@@ -214,7 +214,7 @@ class Jet {
 
     auto forward(const std::vector<Jet<TScalar, Dynamic>>& xs) const
     {
-        const index size = xs[0].size();
+        const index size = length(xs);
 
         auto result = Jet<TScalar, Dynamic>::zero(size);