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[apps/proba] Fix Student distribution root search bracket

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Léa Saviot
2019-08-20 11:27:38 +02:00
parent fb6af6321f
commit eccdd2fb6f
1 changed files with 2 additions and 1 deletions
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3
apps/probability/law/student_law.cpp
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@@ -44,7 +44,8 @@ double StudentLaw::cumulativeDistributiveInverseForProbability(double * probabil
return 0.0;
}
const double small = DBL_EPSILON;
const double big = m_parameter1 >= 1 ? 50.0 : 50 / m_parameter1;
const double standardBig = 10000.0;
const double big = m_parameter1 >= 1 ? standardBig : standardBig / m_parameter1;
double xmin = *probability < 0.5 ? -big : small;
double xmax = *probability < 0.5 ? -small : big;
return cumulativeDistributiveInverseForProbabilityUsingBrentRoots(probability, xmin, xmax);