reintegration of LatCore & folder restructuration

lib/Numerical/FFT.hpp

@@ -0,0 +1,53 @@
+/*
+ * FFT.hpp, part of LatAnalyze
+ *
+ * Copyright (C) 2013 - 2017 Antonin Portelli
+ *
+ * LatAnalyze 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * LatAnalyze 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 LatAnalyze.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef Latan_FFT_hpp_
+#define Latan_FFT_hpp_
+
+#include <LatAnalyze/Global.hpp>
+
+BEGIN_LATAN_NAMESPACE
+
+/******************************************************************************
+ *                             FFT abstract class                             *
+ ******************************************************************************/
+
+class FFT
+{
+public:
+    enum
+    {
+      Forward  = 0,
+      Backward = 1
+    };
+public:
+  // constructor
+  FFT(void) = default;
+  FFT(const Index size);
+  // destructor
+  virtual ~FFT(void) = default;
+  // size
+  virtual void resize(const Index size) = 0;
+  // FFT
+  virtual void operator()(CMat &x, const unsigned int dir = FFT::Forward) = 0;
+};
+
+END_LATAN_NAMESPACE
+
+#endif // Latan_FFT_hpp_