From: Raymond Toy <toy@rt...> - 2001-06-25 15:34:47
>>>>> "Sam" == Sam Steingold <sds@...> writes:
Sam> Update of /cvsroot/clocc/clocc/src/cllib
Sam> In directory usw-pr-cvs1:/tmp/cvs-serv14483
Sam> Modified Files:
Sam> Log Message:
Sam> (erf): comment: the same as cumulative normal distribution function
While you've defined erf to be the same as the cumulative normal, is
this really right?
Most books I've seen (other than probability books) define
erf(x) = 2/sqrt(pi) integral exp(-t^2) dt
integration from 0 to x. (This is the definition in Abramowitz &
Stegun). Closely related, but not the same as the normal CDF.
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