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annotate general/numerical/scalar/erfratio.m @ 54:9bcf5e133bf0

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Added from old stats library.
author samer
date Mon, 23 Feb 2015 16:08:09 +0000
parents db7f4afd27c5
children
rev   line source
samer@4 1 function y=erfratio(x)
samer@4 2 % erfratio - returns gausspdf(x)./erfp(x) but using a better computation
samer@4 3 %
samer@4 4 % erfratio :: real -> nonneg.
samer@4 5 y = 2./(sqrt(2*pi)*erfcx(x/sqrt(2)));