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// Example of using the GeographicLib::Accumulator class
#include <iostream>
#include <exception>
#include <GeographicLib/Accumulator.hpp>
using namespace std;
using namespace GeographicLib;
int main() {
try {
// Compare using Accumulator and ordinary summation for a sum of large and
// small terms.
double sum = 0;
Accumulator<> acc = 0;
sum += 1e20; sum += 1; sum += 2; sum += 100; sum += 5000; sum += -1e20;
acc += 1e20; acc += 1; acc += 2; acc += 100; acc += 5000; acc += -1e20;
cout << sum << " " << acc() << "\n";
}
catch (const exception& e) {
cerr << "Caught exception: " << e.what() << "\n";
return 1;
}
}
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