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Issue #26114: Remove a reference to 'Numerical Recipes'. 

While no copyright violation occurred, the license which
'Numerical Recipes' operates under is not amenable to Python,
so to prevent confusion it's easier to simply remove its mention.
This commit is contained in:
Brett Cannon 2016-01-15 09:38:24 -08:00
parent a8b43b5fc3
commit 45adb3100b
1 changed files with 2 additions and 3 deletions
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5
Modules/mathmodule.c
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@ -400,9 +400,8 @@ m_lgamma(double x)
Implementations of the error function erf(x) and the complementary error
function erfc(x).
Method: following 'Numerical Recipes' by Flannery, Press et. al. (2nd ed.,
Cambridge University Press), we use a series approximation for erf for
small x, and a continued fraction approximation for erfc(x) for larger x;
Method: we use a series approximation for erf for small x, and a continued
fraction approximation for erfc(x) for larger x;
combined with the relations erf(-x) = -erf(x) and erfc(x) = 1.0 - erf(x),
this gives us erf(x) and erfc(x) for all x.