The following licenses are sorted by the number of conditions, from most gnu agplv3 to none unlicense. Nonexclusive commercial licensing rights are granted under the four types of licenses below for each version. Bsd license problem gnu project free software foundation. The bsd license allows proprietary use and allows the software released under the license to be incorporated into proprietary products. Common development and distribution license 1 common public license 1. A separate installation of the fftw library is required. The berkeley software distribution bsd was an operating system based on research unix, developed and distributed by the computer systems research group csrg at the university of california, berkeley. The fsf encourages users to be specific when referring to the license by name i. The reason for the shift is to be able to run my code on the xeon phi. See how to choose a license for your own work for general recommendations about choosing a license for your work the two major categories of free software license are copyleft and noncopyleft. We believe that fftw, which is free software, should become the fft library of choice for most applications. This means that code using the fftw library via the fftw. As you know, certain of the berkeley software distribution bsd source code files require that further distributions of products containing all or portions of the software, acknowledge within their advertising materials that such products contain software developed by uc berkeley and its.
In 2008, following on from a vote amongst the membership of the netbsd foundation, and in recognition of the changing face of software licensing, the netbsd foundation has changed its recommended license to be a 2 clause bsd license. A bsd license gives a small company the equivalent of software inescrow without any legal complications or costs. The gnu general public license gnu gpl or gpl is a widely used free software license, which guarantees end users the freedom to run, study, share and. Fftw used by fft and ifft algorithms, it can be replaced by more permissive kiss fft or. This program is distributed in the hope that it will be useful. There is a gimp plugin called gfourier that uses fftw to compute fourier transforms of images, as well as a linux program called gstring for guitar tuning, a synthesis program called arss, and a gnome panel plugin called vsa. Further problems with releasing a commercial version is that fftw is gpl and hence, the commercial version have to do without the fftw algorithms. It is slower than pffft, mufft, vdsp, fftw and other accelerated fft libraries. A simple, c99, header only, 0clause bsd licensed, fast fourier transform fft. Nonfree licenses may also be purchased from mit, for users who do.
Fftw is known as the fastest free software implementation of the fast fourier transform fft upheld by regular benchmarks. The gnu radio project is using fftw to implement a softwaredefined radio. A license is an agreement between a developer and user on how a software product can be used. Sign up a simple, c99, header only, 0clause bsd licensed, fast fourier transform fft. Works based on the material may be released under a proprietary license as closed source software. Can i use new bsd licensed librarycode in commercial. Therefore, any program using it must also be gpl licensed, unless they buy a license from mit. Without one, there is no legal structure to use, distribute, or contribute to the code, and no corporate entity will want to touch it. This product includes software developed by the university of california, berkeley and its contributors.
The presence of the files you list in usrlocallib indicates that youll be able to link programs statically with fftw. This program is distributed in the hope that it will be useful, but without any warranty. I put this dll in the software autodesk maya in a folder for adding custom plugins. Add clarification to license and add license to docs.
Other software included in this distribution is provided under other licenses, as set forth below. The terms of a license are outlined in a document called a license or licensing agreement. Bsd licenses are a low restriction type of license for open source software that does not put requirements on redistribution as a low restriction and requirement license type, berkeley source distribution licenses are used for the distribution of many freeware, shareware and open source software. Using gpl makes sence since we then are allowed to include most packages that we would desire. Make it easier for your software project to accept. The ultimate aim is to present a unified interface for all the possible transforms that fftw can perform. An example of dual licensed software is mits fftw fourier transform library, available under both the gnu general public license, version 2 and a proprietary. Kaldidevelopers reason to not to use fftw sourceforge. On windows i would put the fftw dll in the folder that contains the maya. Since, these are the best known ffts it is a pity, but it illustrates the problem of license choice. Why you should use a bsd style license for your open. All packages produced by the asf are implicitly licensed under. I am steadily progressing in my quest to convert from a gcc to an icc and mkl based build of my code. The fftw teams benchmarks, performed on a variety of platforms, show that fftw s performance is typically superior to that of other publicly available fft software.
Fftw3 is available under two licenses, the free gpl and a nonfree license that allows it to be used in proprietary programs. Fftw is a c subroutine library for computing the discrete fourier transform dft in one or more dimensions, of both real and complex data, and of arbitrary input size. The only additional thing id wish is more detailed documentation. In your case they passed, which is good, but its not sufficient to ensure youll be able to build software using fftw. The fftw library will be downloaded on versions of julia where it is no longer distributed as part of julia.
Hi, i am installing scilab from port with fftw enabled. Spherical harmonic tools shtools spherical harmonic tools. Gpl with dual license option to allow commercial license. The free software foundation, which refers to the license as the modified bsd license, states that it is compatible with the gnu gpl. An example of dual licensed software is mits fftw 19 fourier transform library, available under both the gnu general public license, version 2 and a proprietary licence available from mits technology licensing office 20. Note that fftw is licensed under gplv2 or higher see its license file, but the bindings to the library in this package, fftw. The gnu gpl version of fftw is made available via open source licensing. Pages in category software using the bsd license the following 200 pages are in this category, out of approximately 364 total. Hi, i recently came across the fact that kaldi, sphinx and htk have their own fft implementation rather instead of using fftw library. Free software, released under the gnu general public license gpl, see fftw license.
Introduction fftw is a c subroutine library for computing the discrete fourier transform dft in one or more dimensions, of arbitrary input size, and of both real and complex data as well as of evenodd data, i. Nonfree licenses may also be purchased from mit, for users who do not want their programs protected by the gpl. Open source licenses grant permission for anybody to use, modify, and share licensed software for any purpose, subject to conditions preserving the provenance and openness of the software. Fftw3 has already been installed so the process should go without reinstalling fftw. Both the complex dft and the real dft are supported, as well as arbitrary axes of arbitrary shaped and strided arrays, which makes it almost feature equivalent to standard and real fft functions of numpy. Other agreements are more specific to a particular user. The fftw cffi source code is released under the terms of the new bsd license. Licensing agreements can be general and apply to all users, like an eula. The information can be checked out in the accompanying license file.
Today, bsd often refers to its descendants, such as freebsd, openbsd, netbsd, or dragonfly bsd, and systems based on those descendants. Commercial license has to be obtained from the software author. Like many other implementations, it can compute transforms of real and complex valued arrays of arbitrary size and dimension in o n log n time. Shtoolspyshtools is an archive of fortran 95 and python software that can be used to perform spherical harmonic transforms, multitaper spectral analyses on the sphere, expansions of functions into slepian bases, and standard operations on global gravitational and magnetic field data. Licensing constraints make it impossible to use fftw in apache style bsd style software. Previous versions of fftw were distributed without fee for noncommercial use. In 2d and 3d, implicit dealiasing of convolutions substantially reduces memory usage and computation time. A great library very simple to use, with the most convenient license and very good performance. Fftw is licensed under the gnu general public license. Copyleft licenses such as the gnu gpl insist that modified versions of the program must be free software as well. There is of course fftw but it is gpl and for the project that i am currently working on, i am unfortunately unable to release the source code thus i. If a bsd licensed program becomes orphaned, a company can simply take over, in a proprietary manner, the program on which they are dependent. What follows are instructions for compiling and running the xtensor fftw tests.
The sleepycat license sleepycat open source initiative. To all licensees, distributors of any version of bsd. Licensing constraints make it impossible to use fftw in apache stylebsd style. The problem is i have installed fftw on the computer and i dont know how to link maya to the fftw library.
835 1034 1079 185 1141 1167 369 1043 788 979 236 125 323 1356 138 513 423 868 119 760 655 584 431 1493 413 266 1182 632 1445 1491 1462 180 1358 427 1233 600 613 96 688 1438