Dear All,
I am (fortunately) running into a problem with gsl_cdf_fdist_Pinv. It is
not happy to work with some numbers, giving an error message:
gsl: betainv.c:181: ERROR: inverse failed to converge
Default GSL error handler invoked.
Aborted
Below is the test codes, where the firlst 5 lines are fine, but the last
two lines are problematic.
===============================================
// test is on gsl-1.15. To compile the code:
// g++ test.cpp -lgsl -lgslcblas -lm
#include "gsl/gsl_randist.h"
#include "gsl/gsl_cdf.h"
#include <iostream>
using namespace std;
int main()
{
//cout << gsl_cdf_fdist_Pinv(0.975, 50, 100) << endl; // OK
//cout << gsl_cdf_fdist_Pinv(0.975, 10, 20000) << endl; // OK
//cout << gsl_cdf_fdist_Pinv(0.975, 11, 19999) << endl; // OK
//cout << gsl_cdf_fdist_Pinv(0.975, 10, 20000000) << endl; // OK
//cout << gsl_cdf_fdist_Pinv(0.975, 13, 19993) << endl; // OK
cout << gsl_cdf_fdist_Pinv(0.975, 11, 19999000) << endl; // ERROR
cout << gsl_cdf_fdist_Pinv(0.975, 16, 19993) << endl; // ERROR
return 0;
}
===============================================
Looking forward to hearing from you on this issue!
Kindest regards,
Gao
Student in Statistical Genetics, Baylor College of Medicine
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