| Re: Fortran External Calls [message #13828] |
Thu, 17 December 1998 00:00 |
Andy Loughe
Messages: 174
Registered: November 1995
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Senior Member |
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Here is an example page I created quite awhile ago...
http://www.cdc.noaa.gov/~afl/code/call_external/describe.htm l
> Hi,
> I just need help with a simple (I htink) problem.
> Basically I am having a bit of trouble understanding the little
> bit of documentation in my idl manuals on call_extern. I just have a f90
> function that I want to call from idl. The manuals refer to some advanced
> idl manual which I don't seem to have.
> I found the faq and they have a very promising site at
> eos.crseo.ucsb.edu:/pub/idl/idl-fortran.Z
> but their isn't any such file at this site.
> Anyway I think all I need is a solid example of it being done.
> Don't really understand how to do the argv stuff in fortran. What I am
> trying is definetely not working.
> Thanks in advance.
> John Grimes
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| Re: Fortran External Calls [message #13831 is a reply to message #13828] |
Thu, 17 December 1998 00:00  |
edors
Messages: 7
Registered: November 1998
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Junior Member |
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John,
Look in one of the following directories I think you will find the
examples you are looking for.
IDL version 4 : ${IDL_DIR}/external/examples/sharelib
IDL version 5.1 : ${IDL_DIR}/external/sharelib
IDL version 5.2 : ${IDL_DIR}/external/call_external/Fortran.
Eric
jpgrimes@midway.uchicago.edu (john peter grimes) writes:
> Hi,
> I just need help with a simple (I htink) problem.
> Basically I am having a bit of trouble understanding the little
> bit of documentation in my idl manuals on call_extern. I just have a f90
> function that I want to call from idl. The manuals refer to some advanced
> idl manual which I don't seem to have.
> I found the faq and they have a very promising site at
> eos.crseo.ucsb.edu:/pub/idl/idl-fortran.Z
> but their isn't any such file at this site.
> Anyway I think all I need is a solid example of it being done.
> Don't really understand how to do the argv stuff in fortran. What I am
> trying is definetely not working.
> Thanks in advance.
> John Grimes
>
--
==================================
| Eric E. Dors |
| Los Alamos National Laboratory |
| edors@lanl.gov |
==================================
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| Re: Fortran External Calls [message #13841 is a reply to message #13828] |
Thu, 17 December 1998 00:00 |
steinhh
Messages: 260
Registered: June 1994
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Senior Member |
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John Grimes wrote (about F90 call_external problems):
> Anyway I think all I need is a solid example of it being done.
> Don't really understand how to do the argv stuff in fortran. What I am
> trying is definetely not working.
Although it's *possible* that there's a mechanism in F90 that will
allow this to be done, I doubt it. You will probably have to
write a C wrapper that gets the parameters from argv and then
passes them to the F90 routine. See the examples in
$IDL_DIR/external/call_external/Fortran (that's the name
of the directory for IDL 5.2, anyway - can't seem to remember
the capital F in Fortran before....) Beware that routine
naming conventions (underscores etc.) may be different
in C, F77 and F90 compilers.
You should also look at the online help more closely, there's
a lot of it that's hidden well: There's the "Main IDL Help File",
and then there's the "Other Online Books" (think the naming
etc. is slightly different for earlier versions, but the thing
that counts is that the online help is segmented into "books",
and when you're looking at one book, you cannot see what's
in the other books until you make the switch in the Contents
section of the Topics "dialog").
Regards,
Stein Vidar
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