ex_5asqp2.c

来自「an modern SQP method to make the origina」· C语言 代码 · 共 54 行

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "math_util.h"
int n_fun;
main()
{
    long double tol, *x;
    int n, m, p;
    void ex5a_fun( long double *, long double *, long double * );
    void sqp_2( void(*)(long double *, long double *, long double *), 
       long double *, int, int, int, long double ); 
       
    n_fun = 0;   
    
	n = 2;
	m = 0;
	p = 0;
	
	x = a1d_allo_dbl( n );
	
	x[0] = -1.0;
	x[1] = 1.0;

	tol = 1.0e-4;
	
    sqp_2( ex5a_fun, x, n, m, p, tol );
    
    printf("\nSolution x: ");
    print_vec_dbl( x, n );
    printf("\n");
    printf(" # of function evaluations: %d\n",n_fun);
}
/*	
*/
void ex5a_fun( f, g, x )
long double *f, *g, *x;
{

   n_fun++; 
   *f = exp(x[0])*(4.0*x[0]*x[0]+
          2.0*x[1]*x[1]+4.0*x[0]*x[1]+2.0*x[1]+1.0);

   return;
}
/*
itt = 9, f = 1.355e-11, |g| = 0.000e+00, |dx| = 2.915e-04, |dL| = 4.336e-03

norm( dL ) = 1.690e-05

Solution x:  4.999996e-01  -9.999976e-01

 # of function evaluations: 37
*/