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2025-02-Numerical/lib/nr/cpp/recipes/chsone.cpp
2025-09-12 18:55:25 +09:00

19 lines
367 B
C++

#include "nr.h"
void NR::chsone(Vec_I_DP &bins, Vec_I_DP &ebins, const int knstrn, DP &df,
DP &chsq, DP &prob)
{
int j;
DP temp;
int nbins=bins.size();
df=nbins-knstrn;
chsq=0.0;
for (j=0;j<nbins;j++) {
if (ebins[j] <= 0.0) nrerror("Bad expected number in chsone");
temp=bins[j]-ebins[j];
chsq += temp*temp/ebins[j];
}
prob=gammq(0.5*df,0.5*chsq);
}