From 7477b895cc94d33d6b4ea8f7a7f1e1fa2777368e Mon Sep 17 00:00:00 2001
From: Per A Brodtkorb <per.andreas.brodtkorb@gmail.com>
Date: Wed, 22 Feb 2017 04:12:48 +0100
Subject: [PATCH] Small fix

---
 wafo/integrate.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wafo/integrate.py b/wafo/integrate.py
index 6caf4aa..bf26e60 100644
--- a/wafo/integrate.py
+++ b/wafo/integrate.py
@@ -1230,7 +1230,7 @@ class _Quadgr(object):
         b = np.asarray(b)
         if a == b:
             q_val = b - a
-            err = b - a
+            err = np.abs(b - a)
             return q_val, err
 
         a, b, reverse = self._order_limits(a, b)