Below is the framework of my module source. I know how to do a “use : only” to draw in functions and subroutines from it as needed. What I don’t know how to do is code the module so that I could draw in only the two constants at the top with a USE and ignore the functions and subroutines, should I wish to do so. Is there a source construct for doing this? (Using gfortran, if that makes a difference.)

Below is the framework of my module source. I know how to do a “use : only” to draw in functions and subroutines from it as needed. What I don’t know how to do is code the module so that I could draw in only the two constants at the top with a USE and ignore the functions and subroutines, should I wish to do so. Is there a source construct for doing this? (Using gfortran, if that makes a difference.)

Below is the framework of my module source. I know how to do a “use : only” to draw in functions and subroutines from it as needed. What I don’t know how to do is code the module so that I could draw in only the two constants at the top with a USE and ignore the functions and subroutines, should I wish to do so. Is there a source construct for doing this? (Using gfortran, if that makes a difference.)

When I compile the following code:

Recently I noticed that it is possible to associate a pointer with a data object without the target attribute through the use of a subroutine. I tested this with a 4×4 array arr by associating ptr_to_arr => arr and then by performing subtraction arr-ptr_to_arr, which yielded 0.0 everywhere.

I have a 31 year old FORTRAN code which I want to compile on a Linux system. Specifically, the system is a CentOS.

Here is a minimal program to reproduce my problem:

I’ve a simple fortran script that finds roots of a function in an interval [a,b] using the function “zbrent”. This is a simple example looking for roots for y=x^2 – 2 between [0,2].