53 lines
1.5 KiB
C++
53 lines
1.5 KiB
C++
#include <vector>
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#include <array>
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#include <chrono>
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#include <iostream>
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#include <cmath>
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#include <utility>
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int nearest_index(const std::vector<double> &x_ref, const double x, int start=0) {
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while (x > x_ref[start+1]) {
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start++;
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}
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return start;
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}
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double lerp(const std::vector<double>& x_ref, const std::vector<double>& y_ref, const double x, const int i) {
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/*
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* Linear interpolation between two
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*/
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const double x_left = x_ref[i];
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const double y_left = y_ref[i];
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const double x_right = x_ref[i+1];
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const double y_right = y_ref[i+1];
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const double dydx = (y_right - y_left) / ( x_right - x_left );
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return y_left + dydx * (x - x_left);
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}
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std::chrono::time_point<std::chrono::system_clock> printSteps(
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/*
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* Prints roughly every 10 seconds how many runs were done and gives a time estimation
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*/
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const std::chrono::time_point<std::chrono::system_clock> last_print_out,
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const std::chrono::time_point<std::chrono::system_clock> start,
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const int total,
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const int steps
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) {
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const auto now = std::chrono::high_resolution_clock::now();
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if (const std::chrono::duration<float> duration = now - last_print_out; duration.count() < 10.) {
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return last_print_out;
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}
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const std::chrono::duration<float> duration = now - start;
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const auto passed = duration.count();
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std::cout << steps << " of " << total << " steps: " << passed << "s passed; ~" << passed * static_cast<float>(total-steps) / static_cast<float>(steps) << "s remaining\n";
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return now;
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} |