Files
2025-02-Numerical/lib/nr/k_and_r/recipes/chstwo.c
2025-09-12 18:55:25 +09:00

21 lines
380 B
C

void chstwo(bins1,bins2,nbins,knstrn,df,chsq,prob)
float *chsq,*df,*prob,bins1[],bins2[];
int knstrn,nbins;
{
float gammq();
int j;
float temp;
*df=nbins-knstrn;
*chsq=0.0;
for (j=1;j<=nbins;j++)
if (bins1[j] == 0.0 && bins2[j] == 0.0)
--(*df);
else {
temp=bins1[j]-bins2[j];
*chsq += temp*temp/(bins1[j]+bins2[j]);
}
*prob=gammq(0.5*(*df),0.5*(*chsq));
}