Il n'y a pas assez de petits nombres pour répondre aux nombreux demandes faites d'eux.
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Synopsis
#include <fastglc.h>
int (objective_t)( |
double x, |
| void * context, | |
double * fx); |
extern int fastglc_eval( |
size_t n, |
| objective_t * f, | |
| void * context, | |
double * result); |
extern const char * fastgcl_strerror
( |
int errorcode); |
DESCRIPTION
The fastglc_eval function evaluates the integral of the
function f on the interval [-1, 1] using an n-point Gauss-Legendre quadrature.
The parameters, in detail, are:
- size_t
n -
The number of nodes in the quadrature, must be positive.
- objective_t *
f -
A function with prototype objective_t as in the synopsis above, for which the integral is sought.
The function should return zero for success and non-zero on error.
- void *
context -
Context for the function
f, which may beNULLprovided that the function does not dereference it. - double *
result -
The result of the quadrature which will be assigned on success.