33 lines
No EOL
690 B
C++
33 lines
No EOL
690 B
C++
#include "task_4+6.h"
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#include "task_5.h"
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#include "timing.h"
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#include <cmath>
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#include <iostream>
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#include <vector>
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using namespace std;
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double norm(vector<double> const &x) {
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size_t N = x.size();
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double sum = 0.0;
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for (size_t i = 0; i < N; ++i) {
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sum += x[i] * x[i];
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}
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return sqrt(sum);
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}
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vector<double> init_norm(size_t N) {
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vector<double> x(N);
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for (size_t i = 0; i < N; ++i) {
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x[i] = i%219 + 1.0;
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}
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return x;
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}
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void benchmark_norm(vector<double> const &x, size_t NLOOPS) {
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double s(0.0), sum(0.0);
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for (size_t i = 0; i < NLOOPS; ++i) {
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s = norm(x);
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sum += s;
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}
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printf("||x|| = %f\n", sum/NLOOPS);
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} |