NAME

ratfor − rational Fortran dialect

SYNOPSIS

ratfor [ option ... ] [ filename ... ]

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 [n]
next [n]

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)
returns expression to caller from function

define:
define name replacement

include:
include filename

The option −h causes quoted strings to be turned into 27H constructs.  −C 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). 

SEE ALSO

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