Correct suffix for Fortran 2003 source file - Intel Fortran compiler

Question

I\'ve written a small snippet of code, trying to adhere to the Fortran 2003 standard. The code is available on github.

This is my makefile:

FC = gfor         


        

Answer 1

There is nothing in the standard that specifies the suffix of the files. Intel always stated, that they treat *.f90 as the suffix for the free source format irrespective of the standard version. It is just a convention not based on any standard document.

Maybe the f90 suffix is little unfortunate, looking like just for Fortran 90, but you shouldn't hesitate to use it for every free-format source file.

Personally, I also do not like the practice of .f95,.f03, .f08 files. Should I rename the source file just because I call some intrinsic from a newer standard?