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F77 TO F90

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Basic Information

Name of Program

F77_TO_F90

Version-Date

March 1998

Description-Date

May 1998

Catchwords

FORTRAN source code
FORTRAN 90 syntax
conversion of F77 sources

Short Description of Functionality

The program F77_TO_F90 converts FORTRAN sources which have been written in FORTRAN77 standard syntax into correct FORTRAN90 source code.

Input-Files

  1. one or more files with FORTRAN77 code
  2. If more then one file shall be processed (optional) a list of the files (type dateiliste.dat)

Output-Files

  1. one or more files with FORTRAN90 code
  2. printer output f77_to_f90.sdr
  3. (optional) file with test output

Methodology

For every file a version written in F90 syntax will be created. The following changes will be done in comparison with the original code:

  • comment lines wich start with C, c or * change their first character to !.
  • for continuation lines (the 6th column is not a blank) the preceeding line will end with a &. The 6th column is changed to blank normally. If a CHARACTER constant is distributed over the two lines, the 6th column is changed to &.

All changes are documented by the printer output file.

Program(s) to run before this Program

-

Program(s) to run after this Program

F90 compiler

Additional Information

Language

Fortran90

Additional software

-

Original Version

G. Seiß

Maintenance

G. Seiß

Documentation/Literature

self-explanatory


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