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

                                             Jun 1996                                   RATFOR(1)