From 641c00843e04994d89857200ed75f8ce0f3fc4e8 Mon Sep 17 00:00:00 2001
From: Zachary Taylor <ztaylor@ethz.ch>
Date: Tue, 29 Mar 2016 11:24:10 +0200
Subject: [PATCH] added std namespace to isnan

---
 include/rovio/MultilevelPatchAlignment.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/rovio/MultilevelPatchAlignment.hpp b/include/rovio/MultilevelPatchAlignment.hpp
index ef1c1a6f..37ef50ce 100644
--- a/include/rovio/MultilevelPatchAlignment.hpp
+++ b/include/rovio/MultilevelPatchAlignment.hpp
@@ -411,7 +411,7 @@ class MultilevelPatchAlignment {
     cOut = cInit;
     Eigen::Vector3f update; update.setZero();
     for(int iter = 0; iter<maxIter; ++iter){
-      if(isnan(cOut.get_c().x) || isnan(cOut.get_c().y)){
+      if(std::isnan(cOut.get_c().x) || std::isnan(cOut.get_c().y)){
         assert(false);
         return false;
       }
@@ -522,7 +522,7 @@ class MultilevelPatchAlignment {
     update.setZero();
     bool converged = false;
     for(int iter = 0; iter<maxIter; ++iter){
-      if(isnan(cOut.get_c().x) || isnan(cOut.get_c().y)){
+      if(std::isnan(cOut.get_c().x) || std::isnan(cOut.get_c().y)){
         assert(false);
         return false;
       }