(The regression is incorrect from econometric point of view,

just to give an easily reproducible example)

open /usr/local/share/gretl/data/misc/denmark.gdt
ols LRM const LRY
dw=$dwpval

(here Durbin-Watson = 0.298798)

From script output:

? dw=$dwpval
Imhof integral gave negative value

Error executing script: halting
> dw=$dwpval

May be it worth to include into the function
something like this:  if dw<dw0  pvalue<e-N for some N?


 !