NAME¶
ratfor - ratfor preprocessor for Fortran 77
SYNOPSIS¶
ratfor [
-l n] [
-C] [
-o outputfile]
filename
PARAMETERS¶
- -l n
- Set starting label number.
- -o output
- Specify output file; default is stdout.
- -C
- Keep comments in (useful for compiler directives).
- -?
- Show summary of options.
DESCRIPTION¶
Ratfor has the following syntax:
prog: stat
prog stat
stat: if (...) stat
if (...) stat else stat
while (...) stat
repeat stat
repeat stat until (...)
for (...;...;...) stat
do ... stat
switch (intexpr) { case val[,val]: stmt ... default: stmt }
break n
next n
return (...)
digits stat
{ prog } or [ prog ] or $( prog $)
anything unrecognizable
where stat is any Fortran or Ratfor statement, and intexpr is an expression that
resolves into an integer value. A statement is terminated by an end-of-line or
a semicolon. The following translations are also performed.
< .lt. <= .le.
== .eq.
!= .ne. ^= .ne. ~= .ne.
>= .ge. > .gt.
| .or. & .and.
! .not. ^ .not. ~ .not.
Integer constants in bases other that decimal may be specified as n%dddd...
where n is a decimal number indicating the base and dddd... are digits in that
base. For bases > 10, letters are used for digits above 9. Examples: 8%77,
16%2ff, 2%0010011. The number is converted the equivalent decimal value using
multiplication; this may cause sign problems if the number has too many
digits.
String literals ("..." or '...') can be continued across line
boundaries by ending the line to be continued with an underline. The underline
is not included as part of the literal. Leading blanks and tabs on the next
line are ignored; this facilitates consistent indentation.
include file
will include the named file in the input.
define (name,value) or
define name value
defines name as a symbolic parameter with the indicated value. Names of symbolic
parameters may contain letters, digits, periods, and underline character but
must begin with a letter (e.g. B.FLAG). Upper case is not equivalent to lower
case in parameter names.
string name "character string" or
string name(size) "character string"
defines name to be an integer array long enough to accommodate the ASCII codes
for the given character string, one per word. The last word of name is
initialized to the symbolic parameter EOS, and indicates the end of string.
KEYWORDS¶
ratfor fortran preprocessor fortran77 ratfor77