Cleanup data initialization of benchmarks

benchmarks/benchmark_utils.hpp

@@ -7,14 +7,17 @@
 
 #include <benchmark/benchmark.h>
 
+void init_x(std::vector<float> &x) {
+  for (size_t i = 0; i < x.size(); ++i) {
+    x[i] = (i % 360) * 0.0174533f; // degrees to radians
+  }
+}
+
 template <typename Backend>
 static void benchmark_sinf(benchmark::State &state) {
   const size_t N = static_cast<size_t>(state.range(0));
   std::vector<float> x(N), s(N);
-
+  init_x(x);
-  for (size_t i = 0; i < N; ++i) {
-    x[i] = (i % 360) * 0.0174533f; // degrees to radians
-  }
 
   Backend backend;
 
@@ -39,10 +42,7 @@ template <typename Backend>
 static void benchmark_cosf(benchmark::State &state) {
   const size_t N = static_cast<size_t>(state.range(0));
   std::vector<float> x(N), c(N);
-
+  init_x(x);
-  for (size_t i = 0; i < N; ++i) {
-    x[i] = (i % 360) * 0.0174533f;
-  }
 
   Backend backend;
 
@@ -67,10 +67,7 @@ template <typename Backend>
 static void benchmark_sincosf(benchmark::State &state) {
   const size_t N = static_cast<size_t>(state.range(0));
   std::vector<float> x(N), s(N), c(N);
-
+  init_x(x);
-  for (size_t i = 0; i < N; ++i) {
-    x[i] = (i % 360) * 0.0174533f;
-  }
 
   Backend backend;