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[matrix] Diff of /pkg/TODO
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Diff of /pkg/TODO

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revision 1108, Mon Jan 2 23:02:07 2006 UTC revision 1109, Tue Jan 3 16:42:31 2006 UTC
# Line 55  Line 55 
55    
56    (have some dtr* <-> dtp*)    (have some dtr* <-> dtp*)
57    
 - implement diagonal Matrix class  "ddiMatrix" etc  
   using constructor function Diagonal() or Diag().  
   
 - rcond() of a singular dpoMatrix gives a LaPack error instead of just 0:  
   MM <- crossprod(M <- Matrix(c(1:4,9:6), 2,4)) ; rcond(MM)  
   ##> Error in rcond(MM) : Lapack routine dpotrf returned error code 4  
   It's .Call("dpoMatrix_rcond") --> set_rcond() in src/dpoMatrix.c  
   and in src/dppMatrix.c similarly.  
   
   Done(2005-10-03): The error message is more helpful now.  
   
58  ---  ---
59    
60  - combine the C functions for multiplication by special forms and  - combine the C functions for multiplication by special forms and
# Line 106  Line 95 
95    
96  - tcrossprod(x, y) : do provide methods for y != NULL  - tcrossprod(x, y) : do provide methods for y != NULL
97    calling Lapack's DGEMM for "dense"    calling Lapack's DGEMM for "dense"
98      [2005-12-xx: done for dgeMatrix at least]
99    
100    - "ltTmatrix" :
101      2) new("ltTMatrix", diag = "U", Dim = c(2:2, 2:2)) shows lack of ltTM*_validate

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