/* nag_complex_bessel_j (s17dec) Example Program. * * Copyright 2002 Numerical Algorithms Group. * * Mark 7, 2002. */ #include #include #include #include int main(void) { Integer exit_status = 0; Complex z, cy[2]; double fnu; const Integer n = 2; Integer nz; char nag_enum_arg[40]; Nag_ScaleResType scal; NagError fail; INIT_FAIL(fail); /* Skip heading in data file */ scanf("%*[^\n]"); printf("nag_complex_bessel_j (s17dec) Example Program Results\n"); printf("Calling with n = %ld\n", n); printf(" fnu z scal cy[0] " " cy[1] nz\n"); while (scanf(" %lf (%lf,%lf) %39s%*[^\n] ", &fnu, &z.re, &z.im, nag_enum_arg) != EOF) { /* nag_enum_name_to_value (x04nac). * Converts NAG enum member name to value */ scal = (Nag_ScaleResType) nag_enum_name_to_value(nag_enum_arg); /* nag_complex_bessel_j (s17dec). * Bessel functions J_(nu+a)(z), real a >= 0, complex z, * nu = 0,1,2,... */ nag_complex_bessel_j(fnu, z, n, scal, cy, &nz, &fail); if (fail.code != NE_NOERROR) { printf("Error from nag_complex_bessel_j (s17dec).\n%s\n", fail.message); exit_status = 1; goto END; } printf("%7.4f (%7.3f,%7.3f) %-14s (%7.3f,%7.3f) (%7.3f,%7.3f) " "%ld\n", fnu, z.re, z.im, nag_enum_arg, cy[0].re, cy[0].im, cy[1].re, cy[1].im, nz); } END: return exit_status; }