triqs_ctint::tau_t

#include <triqs_ctint/vertex.hpp>

Detailed Description

A point in imaginary time, i.e. $\tau \in [0,\beta]$, but defined on a very fine grid. The position in the segment is given by an uint32_t, i.e. a very long integer. This allows exact comparisons, which notoriously dangerous on floating point number.

Definition at line 17 of file vertex.hpp.

Public Member Functions
	operator double () const
	Cast to corresponding double value in $[0,\beta]$.

Static Public Member Functions
static constexpr tau_t	get_beta ()
	Return \tau = \beta.
static constexpr tau_t	get_beta_minus ()
	Return \tau = beta^{-} = \beta - \delta.
static constexpr tau_t	get_beta_minus_minus ()
	Return \tau = beta^{–} = \beta - 2*\delta.
template<typename RNG>
static tau_t	get_random (RNG &rng)
	Get a random point in $[0,\beta[$.
static constexpr tau_t	get_zero ()
	Return \tau = 0.
static constexpr tau_t	get_zero_plus ()
	Return \tau = 0^{+} = 0 + \delta.
static constexpr tau_t	get_zero_plus_plus ()
	Return \tau = 0^{++} = 0 + 2*\delta.

Public Attributes
uint32_t	n = 0
	$\tau$ value, represented as an integer on a very fine grid

Static Public Attributes
static double	beta = 0.0
	Inverse temperature associated with all $\tau$ points.
static constexpr uint32_t	n_max = std::numeric_limits<uint32_t>::max()
	Maximum value that can be stored inside a uint32_t.

Friends
std::ostream &	operator<< (std::ostream &out, tau_t const &tau)
	Operator allowing output to std::ostream.

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The documentation for this struct was generated from the following files:

• triqs_ctint/vertex.hpp
• triqs_ctint/vertex.cpp