Added libigl library files (header-only library)

xs/src/igl/floor.h

@@ -0,0 +1,30 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
+// 
+// This Source Code Form is subject to the terms of the Mozilla Public License 
+// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
+// obtain one at http://mozilla.org/MPL/2.0/.
+#ifndef IGL_FLOOR_H
+#define IGL_FLOOR_H
+#include "igl_inline.h"
+#include <Eigen/Dense>
+namespace igl
+{
+  // Floor a given matrix to nearest integers 
+  //
+  // Inputs:
+  //   X  m by n matrix of scalars
+  // Outputs:
+  //   Y  m by n matrix of floored integers
+  template < typename DerivedX, typename DerivedY>
+  IGL_INLINE void floor(
+    const Eigen::PlainObjectBase<DerivedX>& X,
+    Eigen::PlainObjectBase<DerivedY>& Y);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "floor.cpp"
+#endif
+
+#endif