wavelet, a C++ code which contains some utilities for computations involving wavelets.
The information on this web page is distributed under the MIT license.
wavelet is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version.
haar_transform, a C++ code which computes the Haar transform of data.
sftpack, a C++ code which implements the "slow" Fourier transform, intended as a teaching tool and comparison with the fast Fourier transform.
SINE_TRANSFORM, a C++ code which demonstrates some simple properties of the discrete sine transform.
WALSH, a C++ code which implements versions of the Walsh and Haar transforms.