fft_mesh Derived Type

type, public :: fft_mesh

Twiddle factors shared by the transforms along all three mesh directions


Components

Type Visibility Attributes Name Initial
integer, public :: mesh(3) = 0

Number of points along each direction
integer, public :: nmax = 0

Length of the twiddle table, the largest mesh dimension
complex(kind=wp), public, allocatable :: tw(:)

Roots of unity exp(-2pii*k/nmax) for k = 0 .. nmax/2 - 1

Source Code

   type :: fft_mesh

      !> Number of points along each direction
      integer :: mesh(3) = 0

      !> Length of the twiddle table, the largest mesh dimension
      integer :: nmax = 0

      !> Roots of unity exp(-2*pi*i*k/nmax) for k = 0 .. nmax/2 - 1
      complex(wp), allocatable :: tw(:)

   end type fft_mesh