38 lines
759 B
C++
38 lines
759 B
C++
#include <cmath>
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#include "nr.h"
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using namespace std;
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void NR::kendl2(Mat_I_DP &tab, DP &tau, DP &z, DP &prob)
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{
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int k,l,nn,mm,m2,m1,lj,li,kj,ki;
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DP svar,s=0.0,points,pairs,en2=0.0,en1=0.0;
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int i=tab.nrows();
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int j=tab.ncols();
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nn=i*j;
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points=tab[i-1][j-1];
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for (k=0;k<=nn-2;k++) {
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ki=(k/j);
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kj=k-j*ki;
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points += tab[ki][kj];
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for (l=k+1;l<=nn-1;l++) {
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li=l/j;
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lj=l-j*li;
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mm=(m1=li-ki)*(m2=lj-kj);
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pairs=tab[ki][kj]*tab[li][lj];
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if (mm != 0) {
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en1 += pairs;
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en2 += pairs;
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s += (mm > 0 ? pairs : -pairs);
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} else {
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if (m1 != 0) en1 += pairs;
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if (m2 != 0) en2 += pairs;
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}
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}
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}
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tau=s/sqrt(en1*en2);
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svar=(4.0*points+10.0)/(9.0*points*(points-1.0));
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z=tau/sqrt(svar);
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prob=erfcc(fabs(z)/1.4142136);
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}
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