| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1259.1 | What is this good for? | WIBBIN::NOYCE | Pulling weeds, pickin' stones | Tue Apr 15 1997 09:13 | 5 |
| I don't have an answer to your question -- I expect someone will soon.
But I'd really like to understand why the customer wants such a tool.
Could you explain how they intend to use it? Is there something we should
be doing differently with out Fortran (or C?) compilers, so that users
wouldn't feel the need to translate programs into a different language?
|
| 1259.2 | netlib has the source for f2c | AXPBIZ::KAMATH | | Tue Apr 15 1997 15:35 | 11 |
|
For what it is worth, the source for f2c is available at netlib -
http://www.netlib.org . You may also want to look at the netlib
site at Bell Labs
http://netlib.bell-labs.com/netlib/f2c/index.html
which includes the paper describing f2c and the reasons why someone
might want to use it.
chandrika.
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| 1259.3 | Trying to clarify ! | FORAT::JLS | Are we in the same ship? | Wed Apr 16 1997 16:17 | 19 |
|
Reply .1
The customer has developped originally his aplication in FORTRAN
and C in the VAX hardware plattaform.Actually he has migrate to
ALPHA plattaform.He�s interested to have all the source code
only in one language (DEC C ),because the major part of the code
is built in DEC C (graphic application/motif).But he�s still having
enough fortran code to think in a tool/product helping in the
porting.
Reply .2
Thanks for the pointer..I'll try to take a look.By the way,do you
know if this tool (f2c) is free?
Thanks again,
/jls.
|
| 1259.4 | netlib stuff is free | AXPBIZ::KAMATH | | Wed Apr 16 1997 16:43 | 6 |
|
regarding .3 - everything in netlib is free. There is only one caveat:
"Anything free comes with no guarantee!". However, it is my impression
that f2c is well supported by the developers at Bell Labs.
chandrika.
|
| 1259.5 | You might do well with f2c, but I'd be cautious | SUBPAC::FARICELLI | | Wed Apr 16 1997 18:06 | 18 |
|
If the code already works on VAX/VMS, I don't see any technical reason why
one would need to convert the FORTRAN code to C just to port to Alpha VMS.
There are other reasons I can think of, like trying to save money by
not buying the Alpha Fortran compiler, or that they don't have any
programmers with Fortran expertise at their site.
I'm not so familiar with f2c, but I would also caution that it is likely
that many VAX FORTRAN extensions that they used in the original code
may not be supported. There could also be subtle differences in
interfacing routines that pass character strings between Fortran and C.
The VAX compiler passes by descriptor; Unix typically by reference and
a (hidden) length argument. f2c may assume the latter.
-- John Faricelli
|
| 1259.6 | This won't get you a single-language environment | WIBBIN::NOYCE | Pulling weeds, pickin' stones | Wed Apr 16 1997 18:18 | 4 |
| Also, don't assume that the C code that comes out of f2c will be easy
for C programmers to maintain. The f2c documentation suggests you would
be better off maintaining the original Fortran, and running it through f2c
again whenever you change it.
|
| 1259.7 | RTL environment might be an issue | STEVEN::hobbs | Steven Hobbs | Wed Apr 16 1997 19:44 | 3 |
| Also, if the customer Fortran code does any Fortran I/O or calls the
VMS Common Language RTL then the converted program might need some
additional work to interface with VMS run-time environment.
|
| 1259.8 | thanks! | FORAT::JLS | Are we in the same ship? | Mon Apr 21 1997 14:19 | 15 |
| Hi,
I'll comment with the customer the comments and hints pointed.
Reply .5: Perhaps I wasn't explainning well the theme....the
application was ported sucessfully from vax to alpha (both fortran and
c codes),and it's working actually in alpha systems.Now,after the
porting,in the next step,the customer wants to go to one source code
only.
Thanks all for your comments,
/jls.
|