#include <math.h>#define NRANSI#include "nrutil.h"void memcof(float data[], int n, int m, float *xms, float d[]){	int k,j,i;	float p=0.0,*wk1,*wk2,*wkm;	wk1=vector(1,n);	wk2=vector(1,n);	wkm=vector(1,m);	for (j=1;j<=n;j++) p += SQR(data[j]);	*xms=p/n;	wk1[1]=data[1];	wk2[n-1]=data[n];	for (j=2;j<=n-1;j++) {		wk1[j]=data[j];		wk2[j-1]=data[j];	}	for (k=1;k<=m;k++) {		float num=0.0,denom=0.0;		for (j=1;j<=(n-k);j++) {			num += wk1[j]*wk2[j];			denom += SQR(wk1[j])+SQR(wk2[j]);		}		d[k]=2.0*num/denom;		*xms *= (1.0-SQR(d[k]));		for (i=1;i<=(k-1);i++)			d[i]=wkm[i]-d[k]*wkm[k-i];		if (k == m) {			free_vector(wkm,1,m);			free_vector(wk2,1,n);			free_vector(wk1,1,n);			return;		}		for (i=1;i<=k;i++) wkm[i]=d[i];		for (j=1;j<=(n-k-1);j++) {			wk1[j] -= wkm[k]*wk2[j];			wk2[j]=wk2[j+1]-wkm[k]*wk1[j+1];		}	}	nrerror("never get here in memcof.");}#undef NRANSI