Name

ratfor − rational FORTRAN dialect

Syntax

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

Description

The ratfor command 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)
returns expression to caller from function

define:
define name replacement

include:
include filename

ratfor is best used with f77(.).

See Also

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