Fortran Bounded Least Square

[yosmes]

Hello,

I have IMSL 7.1 on visual Intel FORTRAN.
I have a complicated function to fit and the fitted parameters need to be always positive (constrained).
The subroutine I currently use is UNLSF.

Is there a subroutine in FORTRAN that can constrain the parameters? While looking the IMSL document, I see there is imsl_f_bounded_least_squares in C.
Is there a similar subroutine in FORTRAN?

Thank you

[mecej4]

BCLSF, see http://docs.roguewave.com/imsl/fortr...ch8.11.20.html.