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Lapack: SSYEV routine

2 messages · Nolwenn Le Meur, Brian Ripley

Original
Nolwenn Le Meur
# 
Hi everyone,

I am interested in using the SSYEV Lapack subroutine in a R package.  
Unfortunately I am not familiar with the all Lapack library and I was 
wondering why the routine SSYEV is not part of the R-LAPACK interface 
module.

Is there any plan to extend the R-Lapack module in the next R release?
Should I try to directly call the SSYEV routine of the external Lapack 
library from my R package?

Any help would be much appreciated.

Best wishes,
Nolwenn
Brian Ripley
#
On Tue, 7 Oct 2008, Nolwenn Le Meur wrote:

            

      
      
      
    

        
Because it is a single-precision subroutine (that is what the leading 's' 
means), and R does not use single precision.

            

      
      
      
    

        
No, because R does not use single precision.

            

      
      
      
    

        
I think you should rethink why you are using single precision routines 
with R.  If you need to, you need to ship the routines you need with the 
package, as e.g. fastICA does, for there need not be any  'external Lapack 
library'.