Solved: Not sure I understand your - Page 2

Larry_R_ · ‎12-03-2014

I want to use to the fpp preprocessor to achieve the following, however fpp doesnt seem to support the preprocessing of partial words. Is there a work around?

#ifdef DOUBLE_PRE

#define pre_ D0

#else

#define pre_ E0

#endif

...

myrealvar = 10.0pre_

FortranFan · ‎12-04-2014

Larry R. wrote:

I want to use to the fpp preprocessor to achieve the following, ..

Larry,

Depending on what all needs you have for the preprecessor, you may wish to consider an alternative based on Intel Fortran compiler directive syntax which I find more flexible:

MODULE MyKinds

   USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : I4 => INT32, SP => REAL32, DP => REAL64, QP => REAL128

   IMPLICIT NONE

   !DEC$ IF DEFINED (SINGLE)
   INTEGER(I4), PARAMETER :: WP = SP
   !DEC$ IF DEFINED (DOUBLE)
   INTEGER(I4), PARAMETER :: WP = DP
   !DEC$ IF DEFINED (QUAD)
   INTEGER(I4), PARAMETER :: WP = QP
   !DEC$ ELSE
   INTEGER(I4), PARAMETER :: WP = SP  !.. Default
   !DEC$ ENDIF

END MODULE MyKinds

PROGRAM p

   USE MyKinds, ONLY : WP

   REAL(WP) :: x

   x = 1E3_wp

   PRINT *, " x = ", x

   STOP

END PROGRAM p

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Steven_L_Intel1 · ‎12-06-2014

Not sure I understand your question, Jim. If y is private in the module you're using, it's not accessible. If you have a rename, x is the local symbol and y is not defined. You can certainly make x private, but that affects only USErs of the module with the private declaration.

FortranFan · ‎12-06-2014

module m3
   ...
   contains
      subroutine sub
         use M2, x => x
         use M2
         use M2, y => x
         ...

My section, "Just because you can, doesn't mean you should." on Fortran just became longer!

Preprocessing Partial Words