Remove build and data folders, move tests and utils to the base of the source tree

tests/benchmarks/benchmark_copy.cc

@@ -0,0 +1,80 @@
+/*!
+ * \file benchmark_copy.cc
+ * \brief Benchmark for memory copy implementations
+ * \author Carles Fernandez-Prades, 2020. cfernandez(at)cttc.es
+ *
+ * Based on https://stackoverflow.com/a/40109182
+ *
+ *
+ * -----------------------------------------------------------------------------
+ *
+ * GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
+ * This file is part of GNSS-SDR.
+ *
+ * Copyright (C) 2020  (see AUTHORS file for a list of contributors)
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ * -----------------------------------------------------------------------------
+ */
+
+#include <benchmark/benchmark.h>
+#include <algorithm>
+#include <complex>
+#include <cstring>
+#include <vector>
+
+constexpr int N = 8184;
+
+void bm_memcpy(benchmark::State& state)
+{
+    std::vector<std::complex<float>> orig(N);
+    std::vector<std::complex<float>> dest(N);
+
+    while (state.KeepRunning())
+        {
+            memcpy(dest.data(), orig.data(), N * sizeof(std::complex<float>));
+        }
+}
+
+
+void bm_stdmemcpy(benchmark::State& state)
+{
+    std::vector<std::complex<float>> orig(N);
+    std::vector<std::complex<float>> dest(N);
+
+    while (state.KeepRunning())
+        {
+            std::memcpy(dest.data(), orig.data(), N * sizeof(std::complex<float>));
+        }
+}
+
+
+void bm_stdcopy(benchmark::State& state)
+{
+    std::vector<std::complex<float>> orig(N);
+    std::vector<std::complex<float>> dest(N);
+
+    while (state.KeepRunning())
+        {
+            std::copy(orig.begin(), orig.end(), dest.begin());
+        }
+}
+
+
+void bm_stdcopy_n(benchmark::State& state)
+{
+    std::vector<std::complex<float>> orig(N);
+    std::vector<std::complex<float>> dest(N);
+
+    while (state.KeepRunning())
+        {
+            std::copy_n(orig.begin(), N, dest.begin());
+        }
+}
+
+BENCHMARK(bm_memcpy);
+BENCHMARK(bm_stdmemcpy);
+BENCHMARK(bm_stdcopy);
+BENCHMARK(bm_stdcopy_n);
+
+BENCHMARK_MAIN();