#NEWLINE# def exactprocess( self , xzero , nobs , ddt = 1.0 , nrepl = 2 ) : #NEWLINE# #INDENT# 'uses exact solution for log of process\n        ' #NEWLINE# lnxzero = np . log ( xzero ) #NEWLINE# lnx = super ( self . __class__ , self ) . exactprocess ( xzero , nobs , ddt = ddt , nrepl = nrepl ) #NEWLINE# return np . exp ( lnx )