Hello, gretl users,
                           It is possible to the  asymmetric effects using waldTest.gfn .  When I apply the following code (from previous tags) to apply my programme ,I got the following message:
"A function definition must have a return type and name"
The code:
function restr (matrix *b) matrix ret = b[3]/b[2] - b[4]/b[2] return matrix ret end function open data4-10 ols 1 0 2 3 4 5 restrict rfunc = restr end restrict  

Can you  any one help and suggest the code ( or)  function  to test the above restriction?

Best regards,

Dhanasekaran K