Unix |
Unix v7 |
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ratfor(1) |
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ratfor − rational Fortran dialect
ratfor [ option ... ] [ filename ... ]
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).
f77(1)
B. W. Kernighan and P. J. Plauger, Software Tools,
Addison-Wesley, 1976.
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