Auxiliary Functions for Chebyshev Series - GNU Scientific Library -- Reference Manual
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### 29.3 Auxiliary Functions

The following functions provide information about an existing Chebyshev series.

— Function: size_t gsl_cheb_order (const gsl_cheb_series * cs)

> This function returns the order of Chebyshev series cs.

— Function: size_t gsl_cheb_size (const gsl_cheb_series * cs)
— Function: double * gsl_cheb_coeffs (const gsl_cheb_series * cs)

> These functions return the size of the Chebyshev coefficient array `c[]` and a pointer to its location in memory for the Chebyshev series cs.

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