fftw.cr

Crystal wrapper to the FFTW 3 library

Installation

First install fftw:

sudo pacman -S fftw

Add this to your application's shard.yml:

dependencies:
  fftw.cr:
    github: firejox/fftw.cr

Usage

You can compute abtitrary size of Fourier transform by this:

require "fftw.cr"

x = Array.new(512) { Complex.new(Random.next_u, Random.next_u) }

dft_x = FFTW.dft(x)

Or be more efficient on fix-size of transform by this:

require "fftw.cr"

plan = FFTW::Plan.new(512)

x = Array.new(512) { Complex.new(Random.next_u, Random.next_u) }

dft_x = plan.dft(x)

Development

Roadmap

• [x] Add Plan class
• [ ] Add full transformations listed in FFTW3 doc
• [ ] FFTW3 wisdom feature
• [ ] Multithread
• [ ] MPI support

Contributing

1. Fork it ( https://github.com/firejox/fftw.cr/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• [firejox] firejox - creator, maintainer