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GNU Scientific Library Reference Manual - Third Edition (v1.12)
by M. Galassi, J. Davies, J. Theiler, B. Gough, G. Jungman, P. Alken, M. Booth, F. Rossi
Paperback (6"x9"), 592 pages, 60 figures
ISBN 0954612078
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28.2 Creation and Calculation of Chebyshev Series

Function: gsl_cheb_series * gsl_cheb_alloc (const size_t n)
This function allocates space for a Chebyshev series of order n and returns a pointer to a new gsl_cheb_series struct.
Function: void gsl_cheb_free (gsl_cheb_series * cs)
This function frees a previously allocated Chebyshev series cs.
Function: int gsl_cheb_init (gsl_cheb_series * cs, const gsl_function * f, const double a, const double b)
This function computes the Chebyshev approximation cs for the function f over the range (a,b) to the previously specified order. The computation of the Chebyshev approximation is an O(n^2) process, and requires n function evaluations.
ISBN 0954612078GNU Scientific Library Reference Manual - Third Edition (v1.12)See the print edition