Ex8 and minor improvements

sheet3/7/benchmark.h

@@ -0,0 +1,21 @@
+#ifndef BENCHMARK_H
+#define BENCHMARK_H
+
+
+#include <vector>
+using namespace std;
+
+double benchmark_A(const vector<double> &x,
+                   const vector<double> &y);
+
+vector<double> benchmark_B(const vector<double> &A,
+                                const vector<double> &x);
+
+vector<double> benchmark_C(const vector<double> &A,
+                                const vector<double> &B,
+                                unsigned int M);
+
+
+
+
+#endif