GNU Scientific Library Reference Manual - Revised Second Edition (v1.8) by M. Galassi, J. Davies, J. Theiler, B. Gough, G. Jungman, M. Booth, F. Rossi Paperback (6"x9"), 636 pages, 60 figures ISBN 0954161734 RRP £24.99 ($39.99) Get a printed copy>>>

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6.1 Polynomial Evaluation

Function: double gsl_poly_eval (const double c[], const int len, const double x)

This function evaluates the polynomial c[0] + c[1] x + c[2] x^2 + \dots + c[len-1] x^{len-1} using Horner's method for stability. The function is inlined when possible.