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Routines

FORTRAN Routines for Spectral methods

Here is a collection of 80 FORTRAN routines that written in 1993. They deal with standard families of orthogonal polynomials (Legendre, Chebyshev and, more in general, Jacobi; Laguerre and Hermite) and  allow the computation of zeros, quadrature weights, transformation from Fourier coefficients to point-values (and viceversa), evaluation of norms, differentiation.

Here, you can download the  FORTRAN source (text format, about 260K). There is a  full manual   (pdf format, about 700KB, 188 pages), with detailed explanation of each single routine. A shorter version (file pdf, about 120KB, 14 pages) of the previous manual is also available.