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21 lines
627 B
C
21 lines
627 B
C
#ifndef PROBABILITY_HYPERGEOMETRIC_FUNCTION_H
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#define PROBABILITY_HYPERGEOMETRIC_FUNCTION_H
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/* This code can be used to compute the Student distribution for |x| < root(k).
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* We do not use it because we want to cover more x, but we keep in case we need
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* it later. */
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/* hypergeometricFunction(a, b, c, z) = 2F1(a, b, c, z)
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* an * bn z^n
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* = sum( -------- * --- )
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* cn n!
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*
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* with :
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* an = 1 if n = 0
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* an = (a*(a+1)*...*(a+n-1) otherwise */
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bool hypergeometricFunction(double a, double b, double c, double z, double epsilon, int maxNumberOfIterations, double * result);
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#endif
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