isnan fixes, needed for VS2012 compiler compatibility

alex85k · alex85k · commit 0624f3341fde · 2014-04-07T20:21:37.000+06:00
diff --git a/Algorithms/DouglasPeucker.cpp b/Algorithms/DouglasPeucker.cpp
@@ -25,6 +25,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 */
 
+#include <boost/math/special_functions/fpclassify.hpp>
 #include "DouglasPeucker.h"
 #include "../DataStructures/SegmentInformation.h"
 #include "../Util/MercatorUtil.h"
@@ -86,15 +87,15 @@ double DouglasPeucker::ComputeDistance(
     }
 
     double r = (p - nY*a)/c;
-    if( std::isnan(r) ) {
+    if( boost::math::isnan(r) ) {
         r = ((segB.lat == point.lat) && (segB.lon == point.lon)) ? 1. : 0.;
     } else if( std::abs(r) <= std::numeric_limits<double>::epsilon() ) {
         r = 0.;
     } else if( std::abs(r-1.) <= std::numeric_limits<double>::epsilon() ) {
         r = 1.;
     }
     FixedPointCoordinate nearest_location;
-    BOOST_ASSERT( !std::isnan(r) );
+    BOOST_ASSERT( !boost::math::isnan(r) );
     if( r <= 0. ){
         nearest_location.lat = segA.lat;
         nearest_location.lon = segA.lon;
diff --git a/DataStructures/EdgeBasedNode.h b/DataStructures/EdgeBasedNode.h
@@ -4,6 +4,7 @@
 #include <cmath>
 
 #include <boost/assert.hpp>
+#include <boost/math/special_functions/fpclassify.hpp>
 
 #include "../Util/MercatorUtil.h"
 #include "../typedefs.h"
@@ -55,7 +56,7 @@ struct EdgeBasedNode {
         const Point foot = ComputePerpendicularFoot(p, q, r, epsilon);
         ratio            = ComputeRatio(p, q, foot, epsilon);
 
-        BOOST_ASSERT( !std::isnan(ratio) );
+        BOOST_ASSERT( !boost::math::isnan(ratio) );
 
         nearest_location = ComputeNearestPointOnSegment(foot, ratio);
 
