Is it not possible to set mnrfit iteration numbers or precision limits?

Is it not possible to set number of iterations in mnrfit or the level of precision?

Answer 1

[the cyclist]

It seems not.

If you type

edit mnrfit

you can look at the code. (Be careful not to change any of it.) It looks like there is a hard-coded limit of 100 iterations. The stopping conditions are also explicitly in there.

It is ill-advised to edit that code, but you could copy it and change the iteration limit, or make it into an input parameter.