Added CMakeLists.txt

Author: Dominic Marcello

CMakeLists.txt

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+
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -O3 -march=native")
+
+add_executable( fmm_test
+	src/main.cpp
+	src/multipole.cpp
+	src/expansion.cpp
+)
+

README

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+
+-----------------------------------------------------
+    Copyright (c) 2016 Dominic C. Marcello
+-----------------------------------------------------
+
+
+This code will compile under g++ using the command:
+
+g++ *.cpp -std=c++11
+
+
+NOTE: To enable the angular momentum conservation feature, define "CORRECTION_ON". To enable the optimized version of the correction, 
+define "CORRECTION_ON" and "CORRECTION_OPTIMIZE." See defs.hpp.

src/defs.hpp

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+
+
+/*  
+    Copyright (c) 2016 Dominic C. Marcello
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#ifndef DEFS_H_
+#define DEFS_H_
+
+#include <array>
+
+#define CORRECTION_ON
+//#define CORRECTION_OPTIMIZE
+
+using real = double;
+using integer = long long;
+
+constexpr integer NDIM = 3;
+constexpr integer ncrit = 8;
+constexpr integer nparts = 100000;
+constexpr integer nchild = 8;
+constexpr integer LP = 20;
+
+#ifdef CORRECTION_ON
+constexpr integer MP = 17;
+#else
+constexpr integer MP = 7;
+#endif
+
+using space_vector = std::array<real,3>;
+
+#endif /* DEFS_H_ */