FFTPACK

A package of Fortran subprograms for the fast Fourier transform of periodic and other symmetric sequences.

Getting started

Get the code

git clone https://github.com/fortran-lang/fftpack.git
cd fftpack

Build with fortran-lang/fpm

Fortran Package Manager (fpm) is a package manager and build system for Fortran.
You can build using provided fpm.toml:

fpm build
fpm test --list
fpm test <test_name, see `fpm.toml` or list>

To use fftpack within your fpm project, add the following to your fpm.toml file:

[dependencies]
fftpack = { git="https://github.com/fortran-lang/fftpack.git" }

Build with Make

Alternatively, you can build using provided Makefile:

make

Build with CMake

This library can also be built using CMake. For instructions see Running CMake. CMake version 3.24 or higher is required.

Build with Meson

This library can also be built using Meson. The following dependencies are required:

• a Fortran compiler
• meson version 0.57 or newer
• a build-system backend, i.e. ninja version 1.7 or newer

Setup a build with

meson setup build

You can select the Fortran compiler by the FC environment variable. To compile and run the projects testsuite use

meson test -C build --print-errorlogs

If the testsuite passes you can install with

meson configure build --prefix=/path/to/install
meson install -C build

Links

• netlib/dfftpack1.0(fftpack4.0)
• Documents of fft routines in GNU/gsl based on netlib/fftpack
• Documents of scipy.fftpack
• NACR/FFTPACK 5.1