Erf z is the integral of the gaussian distribution given by.
Error function mathematica.
Then i tried defining the function as exp log z 2 log erfc i z but this turns out to not be any faster than with automatic switching so it seems hard to speed this up except as daniel lichtblau suggests acl jul 24 11 at 23 46.
Erf z is an entire function of z with no branch cut discontinuities.
Revolutionary knowledge based programming language.
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Erf satisfies the identities.
Revolutionary knowledge based programming language.
Note that some authors e g whittaker and watson 1990 p.
I tried playing with setsystemoptions catchmachineunderflow false which however results in getting 0.
Erf is implemented in the wolfram language as erf z a two argument form giving is also implemented as erf z0 z1.
299 where is a confluent hypergeometric function of the first kind and is a gamma function.
Abramowitz and stegun 1972 p.
Erf z 0 z 1 is given by.
As of version 12 errorlistplot has been superseded by listplot.
For certain special arguments erf automatically evaluates to exact values.
341 define without the leading factor of.