update compilation windows

include/Algo/Histogram/histogram.h

@@ -25,6 +25,10 @@
 #ifndef __HISTOGRAM__
 #define __HISTOGRAM__
 
+#define _USE_MATH_DEFINES
+#include <cmath>
+
+
 #include "Topology/generic/attributeHandler.h"
 #include "Topology/generic/cellmarker.h"
 #include "Geometry/vector_gen.h"

src/Algo/Histogram/histogram.cpp

@@ -60,7 +60,7 @@ void Histogram::populateHisto(unsigned int nbclasses)
 {
 	//compute nb classes if necesary
 	if (nbclasses == 0)
-		m_nbclasses = (unsigned int)(sqrt(m_dataIdx.size()));
+		m_nbclasses = (unsigned int)(sqrt(double(m_dataIdx.size())));
 	else
 		m_nbclasses = nbclasses;