23 lines
347 B
C++
23 lines
347 B
C++
#include "nr.h"
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void NR::quadct(const DP x, const DP y, Vec_I_DP &xx, Vec_I_DP &yy, DP &fa,
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DP &fb, DP &fc, DP &fd)
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{
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int k,na,nb,nc,nd;
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DP ff;
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int nn=xx.size();
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na=nb=nc=nd=0;
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for (k=0;k<nn;k++) {
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if (yy[k] > y)
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xx[k] > x ? ++na : ++nb;
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else
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xx[k] > x ? ++nd : ++nc;
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}
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ff=1.0/nn;
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fa=ff*na;
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fb=ff*nb;
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fc=ff*nc;
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fd=ff*nd;
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}
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