Improve benchmarking tool, add a few math benchmarks.
Change-Id: I641305dd0e4ac0705381e735ed1604c5be7aa536
diff --git a/tests/math_benchmark.cpp b/tests/math_benchmark.cpp
new file mode 100644
index 0000000..a8c1cfa
--- /dev/null
+++ b/tests/math_benchmark.cpp
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "benchmark.h"
+
+#include <math.h>
+
+// Avoid optimization.
+double d;
+double v;
+
+static void BM_math_sqrt(int iters) {
+ StartBenchmarkTiming();
+
+ d = 0.0;
+ v = 2.0;
+ for (int i = 0; i < iters; ++i) {
+ d += sqrt(v);
+ }
+
+ StopBenchmarkTiming();
+}
+BENCHMARK(BM_math_sqrt);
+
+static void BM_math_log10(int iters) {
+ StartBenchmarkTiming();
+
+ d = 0.0;
+ v = 1234.0;
+ for (int i = 0; i < iters; ++i) {
+ d += log10(v);
+ }
+
+ StopBenchmarkTiming();
+}
+BENCHMARK(BM_math_log10);
+
+static void BM_math_logb(int iters) {
+ StartBenchmarkTiming();
+
+ d = 0.0;
+ v = 1234.0;
+ for (int i = 0; i < iters; ++i) {
+ d += logb(v);
+ }
+
+ StopBenchmarkTiming();
+}
+BENCHMARK(BM_math_logb);