步长加速法.cpp

来自「C++最优化方法源程序」· C++ 代码 · 共 22 行

#include "mathyw.h"
#include "iostream.h"
#include "stdlib.h"
#include "math.h"

double fun( double * x );

void main ()
{
	double p[2] = { -1, 1 };
	double * x = new double[2]; 
	length_accelerate( fun, 2, p, x);
	cout<< "x1 = " << x[0] << endl;
	cout<< "x2 = " << x[1] << endl;
	delete[] x;
}

double fun( double * x )
{
	return fabs( x[0]* x[0]+ x[1]* x[1]- 2 )+ fabs( x[0]* x[0]- 3* x[0]- x[1]+ 3 );
}