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https://github.com/triqs/dft_tools
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579368f24b
- lazy_fourier and co --> fourier - ex fourier --> make_gf_from_fourier to make a new gf - = fourier (g) works only iif lhs is a view, like scalar. - updated python (commented fourier method).
39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
#define TRIQS_ARRAYS_ENFORCE_BOUNDCHECK
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#include <triqs/gfs.hpp>
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using namespace triqs::gfs;
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using namespace triqs::arrays;
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#define TEST(X) std::cout << BOOST_PP_STRINGIZE((X)) << " ---> " << (X) << std::endl << std::endl;
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#include <triqs/gfs/local/functions.hpp>
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int main() {
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try {
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double beta = 1, a = 1;
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// construct
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auto gw_n = gf<imfreq, matrix_valued, no_tail>{{beta, Fermion}, {2, 2}};
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auto gt_n = gf<imtime, matrix_valued, no_tail>{{beta, Fermion, 100}, {2, 2}};
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// make a view from a g with a tail
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auto gw = gf<imfreq, matrix_valued>{{beta, Fermion}, {2, 2}};
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auto gt = gf<imtime, matrix_valued>{gf_mesh<imtime>{beta, Fermion, 100}, {2, 2}};
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auto vw = make_gf_view_without_tail(gw);
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auto vt = make_gf_view_without_tail(gt);
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triqs::clef::placeholder<0> tau_;
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// should not and does not compile : improve error message ???
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// gt(tau_) << exp(-a * tau_) / (1 + exp(-beta * a));
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vt(tau_) << exp(-a * tau_) / (1 + exp(-beta * a));
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// test hdf5
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H5::H5File file("ess_g_notail.h5", H5F_ACC_TRUNC);
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h5_write(file, "g", vt);
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// rebuilding a new gf...
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auto g3 = make_gf_from_g_and_tail(vw, gw.singularity());
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// need to test all this....
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}
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TRIQS_CATCH_AND_ABORT;
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}
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