Fix memory test

benchmarks/access_to_memory.cpp

@@ -5,6 +5,7 @@
 #include <memory>
 
 constexpr size_t MB = 1024 * 1024;
+namespace {
 class InitializeInput : public benchmark::Fixture {
  public:
   void SetUp(::benchmark::State& state) {
@@ -31,6 +32,7 @@ class InitializeInput : public benchmark::Fixture {
   float* B;
   size_t array_size;
 };
+}  // namespace
 
 BENCHMARK_F(InitializeInput, MemoryAccessRandomAccessData)
 (benchmark::State& state) {

benchmarks/matrix_multiplication.cpp

 #include <benchmark/benchmark.h>
 #include <matrix_multiplication.h>
 
+namespace {
 class InitializeInput : public benchmark::Fixture {
  public:
   void SetUp(::benchmark::State& state) {
@@ -25,6 +26,7 @@ class InitializeInput : public benchmark::Fixture {
   std::complex<float>* B;
   std::complex<float>* C;
 };
+}  // namespace
 
 // Reference standard
 BENCHMARK_F(InitializeInput, MatrixMultiplicationReference)

code/access_to_memory.h

@@ -6,8 +6,9 @@
 
 inline void Initialize(float* a, size_t size) {
   // Initialize matrices with random complex values
-  std::random_device rd;
-  std::mt19937 gen(rd());
+  std::seed_seq seed({42});
+  std::mt19937 gen(seed);
+
   std::uniform_real_distribution<float> dis(-1.0, 1.0);
   for (size_t i = 0; i < size; i++) {
     a[i] = dis(gen);