From 5787cf0544decd6fb6f7d645f3b26c31c6678568 Mon Sep 17 00:00:00 2001
From: Antonin Portelli <antonin.portelli@me.com>
Date: Thu, 3 Apr 2014 10:04:59 +0200
Subject: [PATCH] Minuit message for invalid minimisation

---
 lib/MinuitMinimizer.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/MinuitMinimizer.cpp b/lib/MinuitMinimizer.cpp
index d9b3bf0..bc63f61 100644
--- a/lib/MinuitMinimizer.cpp
+++ b/lib/MinuitMinimizer.cpp
@@ -96,6 +96,10 @@ const DVec & MinuitMinimizer::operator()(const DoubleFunction &f)
     MnMigrad migrad2(minuitF, parameters, 2);
     
     min = migrad2();
+    if (!min.IsValid())
+    {
+        LATAN_WARNING("MINUIT library reported that minimization result is not valid");
+    }
     for (unsigned int i = 0; i < x.size(); ++i)
     {
         x(i) = min.UserParameters().Value(i);