Added new unit test to measure the speed of the various gravity

interaction routines.

.gitignore

@@ -154,6 +154,7 @@ tests/testDump
 tests/testLogger
 tests/benchmarkInteractions
 tests/testGravityDerivatives
+tests/testGravitySpeed
 tests/testPotentialSelf
 tests/testPotentialPair
 tests/testEOS

tests/Makefile.am

@@ -30,7 +30,7 @@ TESTS = testGreetings testMaths testReading.sh testKernel \
 	testPotentialPair testEOS testUtilities testSelectOutput.sh \
 	testCbrt testCosmology testOutputList testFormat.sh \
 	test27cellsStars.sh test27cellsStarsPerturbed.sh testHydroMPIrules \
-        testAtomic
+        testAtomic testGravitySpeed
 
 # List of test programs to compile
 check_PROGRAMS = testGreetings testReading testTimeIntegration \
@@ -43,7 +43,7 @@ check_PROGRAMS = testGreetings testReading testTimeIntegration \
 		 testGravityDerivatives testPotentialSelf testPotentialPair testEOS testUtilities \
 		 testSelectOutput testCbrt testCosmology testOutputList test27cellsStars \
 		 test27cellsStars_subset testCooling testComovingCooling testFeedback testHashmap \
-                 testAtomic testHydroMPIrules
+                 testAtomic testHydroMPIrules testGravitySpeed
 
 # Rebuild tests when SWIFT is updated.
 $(check_PROGRAMS): ../src/.libs/libswiftsim.a
@@ -124,6 +124,8 @@ testLogger_SOURCES = testLogger.c
 
 testGravityDerivatives_SOURCES = testGravityDerivatives.c
 
+testGravitySpeed_SOURCES = testGravitySpeed.c
+
 testPotentialSelf_SOURCES = testPotentialSelf.c
 
 testPotentialPair_SOURCES = testPotentialPair.c

tests/testGravitySpeed.c

+/*******************************************************************************
+ * This file is part of SWIFT.
+ * Copyright (C) 2020 Matthieu Schaller (schaller@strw.leidenuniv.nl).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser 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 Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ ******************************************************************************/
+#include "../config.h"
+
+/* Some standard headers. */
+#include <fenv.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+/* Local headers. */
+#include "swift.h"
+
+
+int main(int argc, char *argv[]) {
+
+  return 0;
+}