112 lines
2.5 KiB
C++
112 lines
2.5 KiB
C++
/*
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Copyright 2014 Wolfgang Thaller.
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This file is part of Retro68.
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Retro68 is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Retro68 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Retro68. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <iostream>
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#include <cstdlib>
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#include <cstdio>
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#include <vector>
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#include <Events.h>
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#include "fixed.h"
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#include <cmath>
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using std::sqrt;
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class timer
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{
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long t;
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public:
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timer() : t(TickCount()) {}
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float elapsed() { return (TickCount() - t) / 60.15f; }
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};
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template<class number>
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void runTests(std::string type, std::vector<number>& numbers)
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{
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std::cout << "***********************************\n";
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std::cout << "Running tests on type " << type << ":\n";
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std::cout << "***********************************\n";
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int n = numbers.size();
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std::vector<number> outputs(n);
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std::cout << "Testing Multiplication..." << std::flush;
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{
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timer t;
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for(int i = 0; i < n; i++)
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{
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outputs[i] = numbers[i] * numbers[n - i - 1];
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}
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std::cout << 1000 * t.elapsed() / n << "ms\n";
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}
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std::cout << "Testing Division..." << std::flush;
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{
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timer t;
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for(int i = 0; i < n; i++)
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{
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outputs[i] = numbers[i] / numbers[n - i - 1];
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}
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std::cout << 1000 * t.elapsed() / n << "ms\n";
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}
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std::cout << "Testing Square Root..." << std::flush;
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{
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timer t;
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for(int i = 0; i < n; i++)
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{
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outputs[i] = sqrt(numbers[i]);
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}
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std::cout << 1000 * t.elapsed() / n << "ms\n";
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}
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std::cout << std::endl;
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}
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int main(int argc, char** argv)
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{
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std::cout << "Hello, world.\n";
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std::cout << "Generating numbers..." << std::flush;
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const size_t n = 1000;
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std::vector<fixed> numbers(n);
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std::vector<float> floats(n);
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std::vector<double> doubles(n);
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for(size_t i = 0; i < numbers.size(); i++)
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{
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numbers[i] = fixed(std::rand(), fixed::raw());
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floats[i] = float(std::rand()) / RAND_MAX;
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doubles[i] = double(std::rand()) / RAND_MAX;
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}
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std::vector<fixed> outputs(n);
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std::cout << "done.\n\n";
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runTests("float", floats);
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runTests("double", doubles);
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runTests("fixed", numbers);
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std::cout << "Press Enter to Exit ;-)\n";
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std::cin.get();
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return 0;
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}
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