support for std::cout

CMakeLists.txt

@@ -13,6 +13,13 @@ endif()
 set_property(CACHE CMAKE_BUILD_TYPE PROPERTY
 	STRINGS "Debug;Release;RelWithDebInfo;MinSizeRel;Profile")
 
+option (SUPPORT_STDIOSTREAM
+	"If enabled provides support for << operator (as used with
+	std::cout)" OFF)
+if((SUPPORT_STDIOSTREAM))
+	add_definitions(-DSUPPORT_STDIOSTREAM)
+endif()
+
 set(CMAKE_CXX_FLAGS_PROFILE
 	${CMAKE_CXX_FLAGS_DEBUG}
 	--coverage

matrix/Matrix.hpp

@@ -13,6 +13,10 @@
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
+#if defined(SUPPORT_STDIOSTREAM)
+#include <iostream>
+#include <iomanip>
+#endif // defined(SUPPORT_STDIOSTREAM)
 
 #include "math.hpp"
 
@@ -413,6 +417,23 @@ Matrix<Type, M, N> ones() {
     return m;
 }
 
+#if defined(SUPPORT_STDIOSTREAM)
+template<typename Type, size_t  M, size_t N>
+std::ostream& operator<<(std::ostream& os,
+        const matrix::Matrix<Type, M, N>& matrix)
+{
+        for (size_t i = 0; i < M; ++i) {
+            os << "[";
+            for (size_t j = 0; j < N; ++j) {
+                os << std::setw(10) << static_cast<double>(matrix(i, j));
+                os << "\t";
+            }
+            os << "]" << std::endl;
+        }
+    return os;
+}
+#endif // defined(SUPPORT_STDIOSTREAM)
+
 typedef Matrix<float, 3, 3> Matrix3f;
 
 }; // namespace matrix