triqs::gfs::is_gf_real

#include <triqs/gfs.hpp>

Synopsis

template<typename G>

bool is_gf_real (G const & g, double tolerance = 1.e-13)

is_gf_real(g, tolerance).

Template parameters

G any Gf type

g a gf

tolerance tolerance threshold

true iif the function g is real up to tolerance