TT Routines

The section gives detailed description of TT routines, their syntax, parameters and values they return. Double-precision and single-precision versions of the same routine are described together.

TT routines call Intel MKL FFT interface (described in FFT Functions), which enhances performance of the routines.

?_init_trig_transform
Initializes basic data structures of a Trigonometric Transform.
?_commit_trig_transform
Checks consistency and correctness of user's data as well as initializes certain data structures required to perform the Trigonometric Transform.
?_forward_trig_transform
Computes the forward Trigonometric Transform of type specified by the parameter.
?_backward_trig_transform
Computes the backward Trigonometric Transform of type specified by the parameter.
free_trig_transform
Cleans the memory allocated for the data structure used by the FFT interface.