package fftw3

  1. Overview
  2. Docs

Module D.Array1Source

FFT of Bigarray.Array1.

Sourceval create : ('a, 'b) Bigarray.kind -> 'c Bigarray.layout -> int -> ('a, 'b, 'c) Bigarray.Array1.t

See Fftw3.Sig.Genarray.create.

Sourceval of_array : ('a, 'b) Bigarray.kind -> 'c Bigarray.layout -> 'a array -> ('a, 'b, 'c) Bigarray.Array1.t

of_array kind layout a build a one-dimensional aligned big array initialized from the given array.

Sourcetype 'l complex_array = (Complex.t, complex_elt, 'l) Bigarray.Array1.t

Double precision complex 1D array.

Sourcetype 'l float_array = (float, float_elt, 'l) Bigarray.Array1.t

Double precision float 1D array.

Sourceval dft : dir -> ?meas:measure -> ?destroy_input:bool -> ?unaligned:bool -> ?howmany_n:int array -> ?howmanyi:int list -> ?ni:int -> ?ofsi:int -> ?inci:int -> 'l complex_array -> ?howmanyo:int list -> ?no:int -> ?ofso:int -> ?inco:int -> 'l complex_array -> c2c plan

dft dir x y returns a plan to compute the DFT of x and store it in y.

The parameters meas, destroy_input, unaligned are as for Fftw3.Sig.Genarray.dft.

  • parameter n

    the logical length of the array. If not provided, it is automatically computed from ofsi, inci and Array1.dim x.

Remark: If you want to transform several 1D arrays at once, use Fftw3.Sig.Array2.dft with ~howmanyi and ~howmanyo set appropriately.

Sourceval r2c : ?meas:measure -> ?destroy_input:bool -> ?unaligned:bool -> ?howmany_n:int array -> ?howmanyi:int list -> ?ni:int -> ?ofsi:int -> ?inci:int -> 'l float_array -> ?howmanyo:int list -> ?no:int -> ?ofso:int -> ?inco:int -> 'l complex_array -> r2c plan

See Fftw3.Sig.Genarray.r2c.

Sourceval c2r : ?meas:measure -> ?destroy_input:bool -> ?unaligned:bool -> ?howmany_n:int array -> ?howmanyi:int list -> ?ni:int -> ?ofsi:int -> ?inci:int -> 'l complex_array -> ?howmanyo:int list -> ?no:int -> ?ofso:int -> ?inco:int -> 'l float_array -> c2r plan

See Fftw3.Sig.Genarray.c2r.

Sourceval r2r : r2r_kind -> ?meas:measure -> ?destroy_input:bool -> ?unaligned:bool -> ?howmany_n:int array -> ?howmanyi:int list -> ?ni:int -> ?ofsi:int -> ?inci:int -> 'l float_array -> ?howmanyo:int list -> ?no:int -> ?ofso:int -> ?inco:int -> 'l float_array -> r2r plan

See Fftw3.Sig.Genarray.r2r.