F77_TO_F90
Convert FORTRAN77 to FORTRAN90

F77_TO_F90 is a FORTRAN90 program which can convert FORTRAN77 codes to FORTRAN90 format.

Usage:

f77_to_f90 input.f output.f90

• input.f is the input FORTRAN77 file;
• output.f90 is the output file, which has been converted.

Languages:

F77_TO_F90 is available in a FORTRAN90 version.

Related Programs and Data:

F90_TO_F77, a FORTRAN90 program which assists in the conversion of a FORTRAN90 file to FORTRAN77 format.

FIXCON, a FORTRAN90 program which reads a FORTRAN file using FORTRAN77 continuation statements, and makes a copy that uses FORTRAN90 continuation instead.

Author:

Michael Metcalfe

Source Code:

• f77_to_f90.f90, the source code.

Examples and Tests:

• prog.f, a sample FORTRAN77 source code.
• prog.f90, the converted FORTRAN90 version.

List of Routines:

• MAIN is the main program.
• STRUCTURE is a module defining the maximum DO nesting and statement length.
• DATA is a module.
• STATISTICS is a module.
• ALL_PROCEDURES is a module containing all the procedures.
• ARGUMENT stores the names of a routine and its arguments.
• BLANK reformats the statement so a single blank separates most tokens.
• IDENTIFY identifies statements belonging to DO's, IF's or FORMAT's.
• KEYWORD cleans up a keyword that has been read.
• NAMEOF picks out the name of a procedure.
• PROGRAM_UNITS is the principal subroutine.
• REFORM reformats and outputs accepted statements.
• SPECIAL applies special treatment for peculiar Fortran syntax.
• START prepares for PROGRAM_UNITS.
• TERMINATE prints the final summary.

You can go up one level to the FORTRAN90 source codes.