16 lines
281 B
C++
16 lines
281 B
C++
#include "nr.h"
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void NR::banmul(Mat_I_DP &a, const int m1, const int m2, Vec_I_DP &x,
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Vec_O_DP &b)
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{
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int i,j,k,tmploop;
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int n=a.nrows();
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for (i=0;i<n;i++) {
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k=i-m1;
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tmploop=MIN(m1+m2+1,int(n-k));
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b[i]=0.0;
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for (j=MAX(0,-k);j<tmploop;j++) b[i] += a[i][j]*x[j+k];
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}
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}
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