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sci-libs/fftw

Fast C library for the Discrete Fourier Transform

Screenshots

  • fftw-3.1.2-r1
    ~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~sparc ~x86
    altivec doc fortran openmp sse sse2 threads debug
    View      Download      License: GPL-2
  • fftw-3.1.2
    alpha amd64 arm hppa ia64 ~mips ppc ppc64 sparc x86
    altivec fortran sse sse2 test debug
    View      Download      License: GPL-2
  • fftw-2.1.5-r5
    ~alpha ~amd64 ~hppa ~ia64 ~ppc ~ppc64 ~sparc ~x86
    doc float fortran mpi openmp threads debug
    View      Download      License: GPL-2
  • fftw-2.1.5-r4
    alpha amd64 hppa ia64 ppc ppc64 sparc x86
    doc fortran mpi float debug
    View      Download      License: GPL-2

USE Flags

altivec
Global: Adds support for optimizations for G4 and G5/ppc970 processors
doc
Global: Adds extra documentation (API, Javadoc, etc)
fortran
Global: Adds support for fortran (formerly f77)
openmp
Global: Build support for the OpenMP (support parallel computing)
Local: Build support for the OpenMP (support parallel computing)
sse
Global: fast floating point optimization for PentiumIII+ class chips
sse2
Global: faster floating point optimization for SSE2 capable chips
threads
Global: Adds threads support for various packages. Usually pthreads
debug
Global: Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see http://www.gentoo.org/proj/en/qa/backtraces.xml
test
Global: Workaround to pull in packages needed to run with FEATURES=test. Portage-2.1.2 handles this internally, so don't set it in make.conf/package.use anymore
float
Global: Links default library to single precision instead of double (symlinks only)
Local: Links default library to single precision instead of double (symlinks only)
mpi
Global: Adds MPI (Message Passing Interface) layer to the apps that support it