Fortran: inner loop dependence on outer loop

[svartak]

Hello,

I want to write an inner loop which takes values based on the variable values of the outer loop. For outer loop, m=1, Nmax and for inner loop, I want n to take values from 1 to Nmax-m. But I am not sure if I can directly specify n = 1, Nmax-m. Also I want to use Nmax-m value for one of the calculation inside the loop, how should I specify that?

Thanks a lot for your help,
Swati

 

[AlephZero]

You mean

do m = 1, nmax
* calculate something
   do n = 1, nmax-m
*    calculate something else
   enddo 
enddo

Fortran won't have any problem with that (unless your compiler only understands Fortran 66, which is unlikely!)