mirror of
https://github.com/triqs/dft_tools
synced 2024-12-26 22:33:48 +01:00
edd1ff4529
A first general restructuration of the doc according to the pattern [tour|tutorial|reference]. In the reference part, objects are documented per topic. In each topic, [definition|c++|python|hdf5] (not yet implemented)
42 lines
992 B
C++
42 lines
992 B
C++
#include <triqs/det_manip/det_manip.hpp>
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struct fun {
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typedef double result_type;
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typedef double argument_type;
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double operator()(double x, double y) const {
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const double pi = acos(-1.);
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const double beta = 10.0;
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const double epsi = 0.1;
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double tau = x - y;
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bool s = (tau > 0);
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tau = (s ? tau : beta + tau);
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double r = epsi + tau / beta * (1 - 2 * epsi);
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return -2 * (pi / beta) / std::sin(pi * r);
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}
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};
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int main() {
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fun f;
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triqs::det_manip::det_manip<fun> D(f, 100);
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/// insertions of 3 lines and 3 columns
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double x = 2., y = 9., detratio;
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std::cout << D.size() << std::endl;
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detratio = D.try_insert(0, 0, x, y);
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std::cout << D.size() << std::endl;
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D.complete_operation();
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std::cout << D.size() << std::endl;
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detratio = D.try_insert(0, 1, 2., 3.);
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D.complete_operation();
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detratio = D.try_insert(0, 0, 4., 5.);
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D.complete_operation();
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/// removal of a line (the 3rd) and a column (the 2nd)
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detratio = D.try_remove(2, 1);
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D.complete_operation();
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}
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