From 72706eb6697fba361e138ddaca0765f8415eb8f3 Mon Sep 17 00:00:00 2001
From: Peter Bruin <P.Bruin@warwick.ac.uk>
Date: Fri, 18 Jul 2014 16:25:03 +0100
Subject: [PATCH] Trac 12947: handle numerical noise correctly

---
 src/sage/interfaces/maxima_lib.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/sage/interfaces/maxima_lib.py b/src/sage/interfaces/maxima_lib.py
index 039c75fc3cb..7848b94c388 100644
--- a/src/sage/interfaces/maxima_lib.py
+++ b/src/sage/interfaces/maxima_lib.py
@@ -760,8 +760,11 @@ def sr_integral(self,*args):
         The following integral was computed incorrectly in versions of
         Maxima before 5.27 (see :trac:`12947`)::
 
-            sage: integrate(x*cos(x^3),(x,0,1/2)).n()  # abs tol 1e-16
+            sage: a = integrate(x*cos(x^3),(x,0,1/2)).n()
+            sage: a.real()
             0.124756040961038
+            sage: a.imag().abs() < 3e-17
+            True
 
         """
         try: