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diff --git a/src/svg_import_defs.h b/src/svg_import_defs.h
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+/*
+ * This program source code file is part of KICAD, a free EDA CAD application.
+ *
+ * Copyright (C) 2016 CERN
+ * @author Janito V. Ferreira Filho <janito.vff@gmail.com>
+ * Copyright (C) 2018-2019 KiCad Developers, see AUTHORS.txt for contributors.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#ifndef SVG_IMPORT_DEFS_H
+#define SVG_IMPORT_DEFS_H
+
+#include <cfloat>
+
+template <typename T>
+constexpr T ipow(T num, unsigned int pow)
+{
+    return (pow >= sizeof(unsigned int)*8) ? 0 :
+        pow == 0 ? 1 : num * ipow(num, pow-1);
+}
+
+constexpr int CAIRO_PRECISION = 7;
+constexpr double clipper_scale = ipow(10.0, CAIRO_PRECISION);
+
+#define JC_VORONOI_IMPLEMENTATION
+#define JCV_REAL_TYPE double
+#define JCV_ATAN2 atan2
+#define JCV_SQRT sqrt
+#define JCV_FLT_MAX DBL_MAX
+#define JCV_PI 3.141592653589793115997963468544185161590576171875
+//define JCV_EDGE_INTERSECT_THRESHOLD 1.0e-10F
+
+#endif /* SVG_IMPORT_DEFS_H */