15 lines
235 B
C++
15 lines
235 B
C++
#include "nr.h"
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void NR::rsolv(Mat_I_DP &a, Vec_I_DP &d, Vec_IO_DP &b)
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{
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int i,j;
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DP sum;
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int n=a.nrows();
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b[n-1] /= d[n-1];
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for (i=n-2;i>=0;i--) {
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for (sum=0.0,j=i+1;j<n;j++) sum += a[i][j]*b[j];
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b[i]=(b[i]-sum)/d[i];
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}
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}
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