Dateien nach „BSP_1_D“ hochladen

BSP_1_D/bsp_1_d.cpp

@@ -0,0 +1,34 @@
+#include "bsp_1_d.h"
+
+#include <cassert>       // assert()
+#include <cmath>
+
+using namespace std;
+
+double scalar(vector<double> const &x, vector<double> const &y)
+{
+    assert(x.size() == y.size()); // switch off via compile flag: -DNDEBUG
+    size_t const N = x.size();
+    double sum = 0.0;
+    for (size_t i = 0; i < N; ++i)
+    {
+        sum += x[i] * y[i];
+    }
+    return sum;
+}
+
+double Kahan_skalar(vector<double> const &x, vector<double> const &y)
+{
+    assert(x.size() == y.size()); // switch off via compile flag: -DNDEBUG
+    size_t const N = x.size();
+    double sum = 0.0;
+    double c = 0.0;
+    for (size_t i = 0; i < N; ++i)
+    {
+        double z = x[i]*y[i] - c;
+        double t = sum + z;
+        c = (t - sum) - z;
+        sum = t;
+    }
+    return sum;
+}