FFTPACK is a package of Fortran subprograms for the fast Fourier transform of periodic and other symmetric sequences. It includes complex, real, sine, cosine, and quarter-wave transforms.
file fftpack/links.html fftpack/links.html plus dependencies for related resources file fftpack/doc for user guide for fftpack file fftpack/fft.c fftpack/fft.c plus dependencies for C translation of much of fftpack prec single by Monty <xiphmont@mit.edu> gams J1a lang C file fftpack/cfftb.f fftpack/cfftb.f plus dependencies gams J1a2 for FFT, backward transform (synthesis) of a complex Fourier coefficient array file fftpack/cfftf.f fftpack/cfftf.f plus dependencies gams J1a2 for FFT, forward transform of a complex periodic sequence file fftpack/cosqf.f fftpack/cosqf.f plus dependencies gams J1a3 for FFT, forward cosine transform with odd wave numbers file fftpack/cost.f fftpack/cost.f plus dependencies gams J1a3 for FFT, discrete cosine transform of a real even sequence file fftpack/ezfftb.f fftpack/ezfftb.f plus dependencies gams J1a1 for FFT, backward transform (synthesis) of a real Fourier coefficient array, simplified and slower version of (fftpack/rfftb) file fftpack/ezfftf.f fftpack/ezfftf.f plus dependencies gams J1a1 for FFT, forward transform of a real periodic sequence, simplified and slower version of (fftpack/rfftf) file fftpack/rfftb.f fftpack/rfftb.f plus dependencies gams J1a1 for FFT, backward transform (synthesis) of a real Fourier coefficient array file fftpack/rfftf.f fftpack/rfftf.f plus dependencies gams J1a1 for FFT, forward transform of a real periodic sequence file fftpack/sinqb.f fftpack/sinqb.f plus dependencies gams J1a3 for FFT, backward sine transform (synthesis) with odd wave numbers file fftpack/sinqf.f fftpack/sinqf.f plus dependencies gams J1a3 for FFT, forward sine transform with odd wave numbers file fftpack/sint.f fftpack/sint.f plus dependencies gams J1a3 for FFT, discrete sine transform of a real odd sequence file fftpack/cffti.f fftpack/cffti.f plus dependencies gams -0- for initialization routine for (fftpack/cfftf) and (fftpack/cfftb) file fftpack/cosqb.f fftpack/cosqb.f plus dependencies gams J1a3 for FFT, backward cosine transform (synthesis) with odd wave numbers file fftpack/cosqi.f fftpack/cosqi.f plus dependencies gams -0- for initialization routine for (fftpack/cosqf) and (fftpack/cosqb) file fftpack/ezffti.f fftpack/ezffti.f plus dependencies for initialization routine for (fftpack/ezfftf) and (fftpack/ezfftb) file fftpack/costi.f fftpack/costi.f plus dependencies gams -0- for initialization routine for (fftpack/cost) file fftpack/rffti.f fftpack/rffti.f plus dependencies gams J1a1 for initialization routine for (fftpack/rfftf) and (ftpack/rfftb) file fftpack/sinqi.f fftpack/sinqi.f plus dependencies gams -0- for initialization routtine for (fftpack/sinqf) and (fftpack/sinqb) file fftpack/sinti.f fftpack/sinti.f plus dependencies gams -0- for initialization routine for (fftpack/sint) file fftpack/cfftb1.f fftpack/cfftb1.f plus dependencies file fftpack/cfftf1.f fftpack/cfftf1.f plus dependencies file fftpack/cffti1.f fftpack/cffti1.f plus dependencies file fftpack/changes file fftpack/cosqb1.f fftpack/cosqb1.f plus dependencies file fftpack/cosqf1.f fftpack/cosqf1.f plus dependencies file fftpack/ezfft1.f fftpack/ezfft1.f plus dependencies file fftpack/fftpack.mail file fftpack/passb.f fftpack/passb.f plus dependencies file fftpack/passb2.f fftpack/passb2.f plus dependencies file fftpack/passb3.f fftpack/passb3.f plus dependencies file fftpack/passb4.f fftpack/passb4.f plus dependencies file fftpack/passb5.f fftpack/passb5.f plus dependencies file fftpack/passf.f fftpack/passf.f plus dependencies file fftpack/passf2.f fftpack/passf2.f plus dependencies file fftpack/passf3.f fftpack/passf3.f plus dependencies file fftpack/passf4.f fftpack/passf4.f plus dependencies file fftpack/passf5.f fftpack/passf5.f plus dependencies file fftpack/radb2.f fftpack/radb2.f plus dependencies file fftpack/radb3.f fftpack/radb3.f plus dependencies file fftpack/radb4.f fftpack/radb4.f plus dependencies file fftpack/radb5.f fftpack/radb5.f plus dependencies file fftpack/radbg.f fftpack/radbg.f plus dependencies file fftpack/radf2.f fftpack/radf2.f plus dependencies file fftpack/radf3.f fftpack/radf3.f plus dependencies file fftpack/radf4.f fftpack/radf4.f plus dependencies file fftpack/radf5.f fftpack/radf5.f plus dependencies file fftpack/radfg.f fftpack/radfg.f plus dependencies file fftpack/rfftb1.f fftpack/rfftb1.f plus dependencies file fftpack/rfftf1.f fftpack/rfftf1.f plus dependencies file fftpack/rffti1.f fftpack/rffti1.f plus dependencies file fftpack/sint1.f fftpack/sint1.f plus dependencies file fftpack/test.f fftpack/test.f plus dependencies