numerical recipes compile question

[Martin Reinecke]

Hi!

> Compiling, I get:
> | gfortran -c nrutil.f90
> ~ In file nrutil.f90:39
> 
> 
> ~ lower_triangle=(outerdiff(arth_i(1,1,j),arth_i(1,1,k)) > -n)
> ~                         1
> Error: Symbol 'outerdiff' at (1) has no IMPLICIT type

This looks suspiciously like PR fortran/18108. This is a very long-standing
problem, and obviously not easy to fix :(

Martin