2 #include <gsl/gsl_math.h>
3 #include <gsl/gsl_chebyshev.h>
19 gsl_cheb_series *cs = gsl_cheb_alloc (40);
26 gsl_cheb_init (cs, &F, 0.0, 1.0);
28 for (i = 0; i < n; i++)
30 double x = i / (double)n;
31 double r10 = gsl_cheb_eval_n (cs, 10, x);
32 double r40 = gsl_cheb_eval (cs, x);
33 printf ("%g %g %g %g\n",
34 x, GSL_FN_EVAL (&F, x), r10, r40);