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dft_tools/doc/reference/c++/gf/fourier_0.cpp
Olivier Parcollet 3fe400d34c doc : split c++ code from rst
- examples split from the rst file using a python script (split_code).
- Final result for the doc is unchanged.
- examples are compiled and tested with the other tests.
- examples' code have been clang-formatted, with triqs style.
- doc compiles much faster, and with the same options as the rest of the
  test.
- examples are added as tests, so they are run by make test, as simple C
  tests.
- done for the tutorials and the reference.
- autocompile removed (changed into triqs_example directive).
- add triqs_example :
   - make a literal include of the source code.
   - runs the compiled example
   - add, as before, the result to the source code in the doc.
- added the script split_code, used to make the changes automatically,
  maybe for later reuse. (in _tools)
2014-05-31 23:00:16 +02:00

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C++

#include <triqs/gfs.hpp>
using namespace triqs::gfs;
int main() {
double beta = 1, a = 1;
int N = 10000;
auto gw = gf<imfreq>{{beta, Fermion, N}, {1, 1}};
auto gt = gf<imtime>{{beta, Fermion, N}, {1, 1}};
triqs::clef::placeholder<0> om_;
gw(om_) << 1 / (om_ - a);
// fills a full *view* of gt with the contents of the FFT
// NB : the mesh of gt *must* have the same size as the mesh of gw.
gt() = inverse_fourier(gw);
// make a new fresh gf, with the same size mesh, from the FFT of gt
auto gw2 = make_gf_from_fourier(gt);
}