On Mon, 18 Aug 2008, Zornitsa Luleva wrote:
Hello,
I am trying to call a FORTRAN subroutine within R and something really
strange happens:
Did you read the posting guide? It suggests the R-devel list for
questions about 'C, C++ etc', and Fortran is part of the 'etc'.
I have a dll-library, that I load with dyn.load('mpbvv.dll'). I have checked
the [Ordinal/Name Pointer] Table for the function within the library that I
want to call - it is there (objdump - p mpbvv.dll).
Then, I have written an R-wrapper to call the FORTRAN subroutine, which
works fine. SInce I have 200 "points", at which I have to evaluate the
function, I have to call it 200 times. It works about 100 times just fine
and then R crashes. The values for which the function is evaluated are
almost the same, there no sudden big differences.
The only thing that is probably not really ok is that is.loaded('mpbvv.dll')
returns FALSE.
Correctly: please do read the help before posting: ?is.loaded has
symbol: a character string giving a symbol name.
not, note, a DLL name.
But if I call getLoadedDLLs(), the library is loaded
getLoadedDLLs()
Filename
base base
methods C:/Programme/R/R-2.7.1/library/methods/libs/methods.dll
grDevices C:/Programme/R/R-2.7.1/library/grDevices/libs/grDevices.dll
stats C:/Programme/R/R-2.7.1/library/stats/libs/stats.dll
mpbvv E:/Zoe/DA/mpbvv.dll
Dynamic.Lookup
base FALSE
methods FALSE
grDevices FALSE
stats FALSE
mpbvv TRUE
I am loading four more libraries:
library('actuar')
library('bbmle')
library('polynom')
library('NORMT3')
Could this be a problem?
I don't have any idea why R crashes. Do you?
Most likely an error in your code. Perhaps a mismatch (in type, in
length) between what you pass .Fortran and what your code expects?
Without the reproducible example the posting guide asks for we can only
guess.
Thanks a lot for your advice in advance!
Cheers,
Zoe
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PLEASE do.
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
