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SeriesMPdcsevl Method

Evaluate the n-term Chebyshev series cs at x. Adapted from a method presented in the paper by Broucke referenced below.

Namespace: Altaxo.Calc
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3179.0 (4.8.3179.0)
Syntax
C#
Copy
public static double dcsevl(
	double x,
	double[] cs,
	int n
)

Parameters

x  Double
Value at which the series is to be evaluated.
cs  Double
cs array of n terms of a Chebyshev series. In evaluating cs, only half the first coefficient is summed.
n  Int32
number of terms in array cs.

Return Value

Double
The n-term Chebyshev series cs at x.
Remarks
References: R. Broucke, Ten subroutines for the manipulation of Chebyshev series, Algorithm 446, Communications of the A.C.M. 16, (1973) pp. 254-256. L. Fox and I. B. Parker, Chebyshev Polynomials in Numerical Analysis, Oxford University Press, 1968, page 56. This is a translation from the Fortran version of SLATEC, FNLIB, CATEGORY C3A2, REVISION 920501, originally written by Fullerton W., (LANL) to C++.
See Also