program cauchitasinhouterv3
version 13
args lnf mu theta lsigma
tempvar sigma 
quietly gen double `sigma' = exp(`lsigma')
quietly replace `lnf' = ln((8*exp(`theta')*_pi*(1 - 2*$ML_y1 + 2*$ML_y1^2)*(`sigma'))/((1 + 4*$ML_y1*(-1 + (`mu')) + 4*$ML_y1^4*((`mu')^2 + (`sigma')^2) + 4*$ML_y1^2*(1 - 3*(`mu') + (`mu')^2 + (`sigma')^2) - 8*$ML_y1^3*(-(`mu') + (`mu')^2 + (`sigma')^2))*((1 + exp(`theta'))*_pi + 2*(-1 + exp(`theta'))*atan(((1 - 2*$ML_y1)/(2*(-1 + $ML_y1)*$ML_y1) - (`mu'))/(`sigma')))^2)) /// 
   if $ML_y1 > 0 & $ML_y1 < 1
quietly replace `lnf' = ln(2*`sigma'*exp(`theta')/_pi) if $ML_y1 ==0
quietly replace `lnf' = ln(2*`sigma'/(_pi*exp(`theta'))) if $ML_y1 ==1
end