#include "nrutil.h"

void svbksb(double **u, double w[], double **v, int m, int n, double b[], double x[])
{
	int jj,j,i;
	double s,*tmp;

	tmp=vector(n);
	for (j=0;j<n;j++) {
		s=0.0;
		if (w[j]) {
			for (i=0;i<m;i++) s += u[i][j]*b[i];
			s /= w[j];
		}
		tmp[j]=s;
	}
	for (j=0;j<n;j++) {
		s=0.0;
		for (jj=0;jj<n;jj++) s += v[j][jj]*tmp[jj];
		x[j]=s;
	}
	free_vector(tmp);
}