#include <math.h>#define NRANSI#include "nrutil.h"void qrupdt(float **r, float **qt, int n, float u[], float v[]){	void rotate(float **r, float **qt, int n, int i, float a, float b);	int i,j,k;	for (k=n;k>=1;k--) {		if (u[k]) break;	}	if (k < 1) k=1;	for (i=k-1;i>=1;i--) {		rotate(r,qt,n,i,u[i],-u[i+1]);		if (u[i] == 0.0) u[i]=fabs(u[i+1]);		else if (fabs(u[i]) > fabs(u[i+1]))			u[i]=fabs(u[i])*sqrt(1.0+SQR(u[i+1]/u[i]));		else u[i]=fabs(u[i+1])*sqrt(1.0+SQR(u[i]/u[i+1]));	}	for (j=1;j<=n;j++) r[1][j] += u[1]*v[j];	for (i=1;i<k;i++)		rotate(r,qt,n,i,r[i][i],-r[i+1][i]);}#undef NRANSI