>Wongck at 04:13, 19 February 2012

2012-02-19T04:13:20Z

← Older revision		Revision as of 00:13, 19 February 2012
Line 122:		Line 122:
	</pre>		</pre>

			<br />
			<br />
			Back to [[Fortran]]
	[[Category:Fortran]]		[[Category:Fortran]]
	[[Category:Atari ST software]]		[[Category:Atari ST software]]

>Wongck at 14:35, 13 October 2011

2011-10-13T14:35:53Z

← Older revision		Revision as of 10:35, 13 October 2011
Line 123:		Line 123:


	[[Category:~~C Development tools~~]]		[[Category:Fortran]]
	[[Category:Atari ST software]]		[[Category:Atari ST software]]

>Wongck at 14:34, 13 October 2011

2011-10-13T14:34:11Z

← Older revision		Revision as of 10:34, 13 October 2011
Line 123:		Line 123:


	[[Category:~~Fortran~~]]		[[Category:C Development tools]]
			[[Category:Atari ST software]]

>Wongck at 11:57, 13 October 2011

2011-10-13T11:57:49Z

← Older revision		Revision as of 07:57, 13 October 2011
Line 123:		Line 123:


	[[Category:~~Programming~~]]		[[Category:Fortran]]

>Zorro 2 at 09:24, 24 October 2006

2006-10-24T09:24:52Z

New page

<pre>
<pre>
This archive contains an Atari ST/TT implementation of a Fortran-to-C
compiler, developed by AT&T Bell Laboratories and Bellcore (read the file
NOTICE for legal information). After unpacking, you should have the
following files:

- notice information about copyright, warranty etc.
- f2c.ttp the compiler itself
- f2c.1 man page
- f2c.1t man page for nroff/troff
- f2c.ps Technical report about f2c
- f2c.h include file
- f2c.olb library for 68020/30 machines with 68881 (i.e. Atari TT)
- f2cslow.olb library for any Atari ST/TT (68000, no FPU)

The last three files depend on the C compiler being used to compile the
C programs produced by f2c. The versions included can be used with
GNU-C 1.40 and probably also later releases. In the following it is
assumed that you have a working installation of GNU-C on your system.

The combination of f2c and GNU-C can be used as a Fortran compiler that
compares favourably with commercial compilers, the main disadvantage being
that source-level debugging is not possible. Even those who regularly use
another Fortran compiler might be interested in using f2c as a syntax
checker, since it is very fast and produces better diagnostic output than
any ST Fortran compiler I know of.
Another obvious application is the conversion of Fortran libraries to C to
free future programmers from the burdens of Fortran (now you know my
opinion about Fortran).

Installation:
-------------

- Copy f2c.ttp wherever you keep your executable programs.
- Copy f2c.h wherever GNU-C looks for include files (i.e. the path
specified by the environment variable GNUINC).
- Copy f2c.olb and/or f2cslow.olb wherever you keep the GNU-C
libraries (i.e. the path specified by the environment variable
GNULIB).

Using f2c:
----------

See f2c.1 and/or f2c.1t for details. f2c.ttp itself does not need any
other file to operate, the include file and the libraries are needed
only for subsequent compilation. Please note that f2c options are case
sensitive; you must run it from a shell that does not convert commandline
parameters to upper case like the GEM Desktop does. There are three
differences between the Atari ST implementation and the original Unix
version described in the documentation:

- The Atari ST implementation can only translate one file at a time.
- There is an additional option
-l logfile
which causes f2c to write all error messages to the file 'logfile' in
addition to showing them on the screen.
- The Fortran programs may have the extensions .f or .for or their
upper-case equivalents.

Translating the generated C programs:
-------------------------------------

The programs generated by f2c automatically #include the file f2c.h, which
contains some compiler-specific definitions. For I/O and some mathematical
functions, they contain calls to library functions that are contained in
f2c.olb/f2cslow.olb.
To compile a program foo.c for a machine having a 68020/30 and 68881, use
gcc
-o foo.tos -m68020 -m68881 -D_M68881 foo.c -lf2c
To compile for a generic ST/TT, i.e. using only 68000 opcodes and software
floating point routines, use
gcc
-o foo.tos foo.c -lf2c -lpml

Obtaining the source code:
--------------------------

The source code for f2c and the libraries is available from an automatic
file server at AT&T. For more information, send a message containing the
single line
send index
to "netlib@research.att.com".
The library source code is necessary to use f2c with C compilers other
than GNU-C. Be warned however: porting the libraries to less
Unix-compatible programming environments will not be easy. If anyone
manages to implement a support library for Turbo-C/Pure-C, please let me
know (I gave up after two days; after all, I have other things to do).

Bugs:
-----

I have been using f2c.ttp and f2c.olb for a month now without encountering
any problems. Since I use a TT, I did only some quick checks on
f2cslow.olb, but I don't expect any problems, since f2cslow.olb differs
from f2c.olb only in the compiler options used.
Of course I cannot guarantee anything about this ST/TT implementation;
nevertheless I would be interested in bug reports, because I have come to
rely on f2c a lot for my Fortran programming. Bugs not specific to the
ST/TT implementation should also be reported to the original authors;
obtain the source code for more information.

Konrad Hinsen
Institut fuer Theoretische Physik A
RWTH Aachen
Templergraben 55
D-W-5100 Aachen
Germany

E-Mail addresses:

konrad@thphys.physik.rwth-aachen.de
cd010hi.dacth11.bitnet
konrad_hinsen@ac2.maus.de
</pre>

[[Category:Programming]]

F2C - Revision history

>Wongck at 04:13, 19 February 2012

>Wongck at 14:35, 13 October 2011

>Wongck at 14:34, 13 October 2011

>Wongck at 11:57, 13 October 2011

>Zorro 2 at 09:24, 24 October 2006