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Merge for issue #26114
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@ -400,9 +400,8 @@ m_lgamma(double x)
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Implementations of the error function erf(x) and the complementary error
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function erfc(x).
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Method: following 'Numerical Recipes' by Flannery, Press et. al. (2nd ed.,
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Cambridge University Press), we use a series approximation for erf for
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small x, and a continued fraction approximation for erfc(x) for larger x;
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Method: we use a series approximation for erf for small x, and a continued
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fraction approximation for erfc(x) for larger x;
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combined with the relations erf(-x) = -erf(x) and erfc(x) = 1.0 - erf(x),
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this gives us erf(x) and erfc(x) for all x.
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