banmul.c

适合大型数值计算代码 现在网络上已经找不到了 购买需要20$

#define NRANSI
#include "nrutil.h"

void banmul(float **a, unsigned long n, int m1, int m2, float x[], float b[])
{
	unsigned long i,j,k,tmploop;

	for (i=1;i<=n;i++) {
		k=i-m1-1;
		tmploop=LMIN(m1+m2+1,n-k);
		b[i]=0.0;
		for (j=LMAX(1,1-k);j<=tmploop;j++) b[i] += a[i][j]*x[j+k];
	}
}
#undef NRANSI