NAME

ratfor − rational Fortran dialect

SYNOPSIS

ratfor [ options ] [ files ]

DESCRIPTION

ratfor converts a rational dialect of Fortran into ordinary irrational Fortran.  ratfor provides control flow constructs essentially identical to those in C:

statement grouping:
{ statement; statement; statement }

decision-making:

if (condition) statement [ else statement ]
switch (integer value) {
case integer:statement
...
[ default: ]statement
}

loops:

while (condition) statement
for (expression; condition; expression) statement
do limits statement
repeat statement [ until (condition) ]
break
next

and some syntactic sugar to make programs easier to read and write:

free form input:
multiple statements/line; automatic continuation

comments:
# this is a comment. 

translation of relationals:
>, >=, etc., become .GT., .GE., etc. 

return expression to caller from function:
return (expression)

define:
define name replacement

include:
include file

The option −h causes quoted strings to be turned into 27H constructs.  The −C option copies comments to the output and attempts to format it neatly.  Normally, continuation lines are marked with a & in column 1; the option −6x makes the continuation character x and places it in column 6. 

ratfor is best used with f77(1) and hf77(1). 

SEE ALSO

efl(1), f77(1), hf77(1). 
B. W. Kernighan and P. J. Plauger, Software Tools, Addison-Wesley, 1976.

CX/UX Fortran Reference