[root] Log of /trunk/math/matrix/inc/TMatrixTSym.h

Revision 34744 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Sat Aug 7 06:16:36 2010 UTC (4 years, 5 months ago) by brun
File length: 15824 byte(s)
Diff to previous 32616

From Artur Szostak:
There is a mechanism in GCC 4.6.0 that will allow one to effectively prevent the false positive warnings for -Weffc++ from appearing in software that builds against ROOT, with the -Weffc++ flag set, such as AliRoot. I propose using the mechanism, which will make the development in AliRoot much more pleasant.

Revision 32616 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Mar 15 16:56:42 2010 UTC (4 years, 10 months ago) by rdm
File length: 15452 byte(s)
Diff to previous 27658

Fix issues reported by clang++:
- qualify calls, because name lookup doesn't look in base classes
  (two-phase name lookup).
- unused parameter warnings

Revision 22885 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Fri Mar 28 13:57:25 2008 UTC (6 years, 9 months ago) by rdm
File length: 15414 byte(s)
Diff to previous 22039

move the following directories under the new "math" meta directory:
   mathcore
   mathmore
   fftw
   foam
   fumili
   genvector
   matrix
   minuit
   minuit2
   mlp
   physics
   smatrix
   splot
   unuran
   quadp

Revision 22039 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Thu Feb 7 05:48:31 2008 UTC (6 years, 11 months ago) by brun
Original Path: trunk/matrix/inc/TMatrixTSym.h
File length: 15414 byte(s)
Diff to previous 20882

From Eddy:
- remove bug in Decompose of all TDecompXXX classes : It is checked
whether
    the matrix was already decomposed

- Added to TVector and the different TMatrix flavors the option to use
   "Use" on constant arrys and vectors/matrices.

Revision 20882 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Mon Nov 19 11:31:26 2007 UTC (7 years, 2 months ago) by rdm
Original Path: trunk/matrix/inc/TMatrixTSym.h
File length: 14346 byte(s)
Diff to previous 19826

Set property svn:eol-style LF on all source and Makefiles. This should avoid
problems with Win32 line endings ending up in the repository. All MS tools
support LF eols fine.

Revision 16458 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Fri Oct 6 06:52:34 2006 UTC (8 years, 3 months ago) by brun
Original Path: trunk/matrix/inc/TMatrixTSym.h
File length: 14407 byte(s)
Diff to previous 15068

From Eddy Offermann:
Previously, the matrix package contained a large amount of ASSERT
statements which are a nuisance for programs analyzing a series of
independent events like in high-energy physics .
Assert's were issued when for instance a division by zero was requested
or a matrix was invalid . Most algorithms made matrices/vectors invalid
after an error occured in an operation , like inversion of a singular matrix .
Unfortunately, not all assert's were accompanied by error messages .

This situation has been completely overhauled :
- All error conditions in the algorithms are now accompanied by error
  messages .
- In all algorithms it is still asserted that vectors/matrices are
  valid BUT only in very few cases is a matrix/vector made invalid :
  for instance if memory is allocated with incorrect parameters .
- In case of division by zero, the division is skipped . In case of a
  singular matrix, the inversion routine returns the original matrix .

In the past the result of an inversion could be checked through the
value of the returned determinant or checking whether the inverted matrix
was valid .
Since from now on, we never make the matrix invalid in this operation, the
latter check will not indicate a singular matrix anymore .

   The decompostion classes TDecomp... have a backward-compatible
change in the interface which makes detection of singularity easier :

   old interface :

         void         Invert    (TMatrixD &inv);
         TMatrixD Invert    ();

   new interface :

         Bool_t      Invert    (TMatrixD &inv);
         TMatrixD Invert    (Bool_t &status);
         TMatrixD Invert    () { Bool_t status; return Invert(status);
}

  The returned status is kFALSE in case of singularity .

The old situation is easily reproduced by setting the ROOT variable
gErrorAbortLevel to kError . This cause an exception when there is an error
message (Error...) ., In the past the matrix would be made invalid which
would cause the next operation to throw an exception .

Revision 14745 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Wed Apr 19 08:22:26 2006 UTC (8 years, 9 months ago) by rdm
Original Path: trunk/matrix/inc/TMatrixTSym.h
File length: 13711 byte(s)
Diff to previous 14537

Change the TError.h macros:
Assert   ->  R__ASSERT
Check    ->  R__CHECK
Change the TCollection.h macro:
ForEach  ->  R__FOR_EACH
This to avoid potential problems due too trivial macro names.
The old macros will be removed in the next release. Currently
they will print out warning messages with the advice to move
to the new macro names.

Revision 14537 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Tue Apr 4 05:51:06 2006 UTC (8 years, 9 months ago) by brun
Original Path: trunk/matrix/inc/TMatrixTSym.h
File length: 13699 byte(s)
Diff to previous 14460

From Eddy:
- 2 weeks ago AMultB.. functions were made public . However, unlike any
other
   public function except for the *= calls, it could allocate an object
. In addition
   already Mult function existed (which called AMultB with constr=0) .
   This situation is rectified in the following way :
     The public Mult, MultT and TMult are introduced .

     AMultB , AtMultB and AMultBt are now functions that do not belong
to the
     TMatrixT class anymore, they accept now pointers as arguments .

     None of these functions will create a new object . In internal
calls to AMultB family ,
     first a call to Allocate is made (if necessary) .

    AMultB is used in one of the TMatrixTSym::Similarity calls,
removing the creation of a
    TMatrixT object .

- smatrix/test function reflect the changes above

Revision 14460 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Wed Mar 29 05:16:49 2006 UTC (8 years, 9 months ago) by brun
Original Path: trunk/matrix/inc/TMatrixTSym.h
File length: 13793 byte(s)
Diff to previous 14375

From Eddy:
1) TVectorT TMatrixT TMatrixTSym TMatrixTSparse : made sure that
IsValid Assert's
    are only done when gMatrixCheck is kTRUE
2) TMatrixTSym::Similarity and SimilarityT create a temporary matrix .
If storage
     is <= kWorkMax use a local array . This way less temporary
elements are
    created .
3) In  TMatrixTSym::Similarity and SimilarityT some shape checking was
missing

Revision 14375 - (view) (download) (as text) (annotate) - [select for diffs]
Modified Wed Mar 22 15:16:59 2006 UTC (8 years, 10 months ago) by brun
Original Path: trunk/matrix/inc/TMatrixTSym.h
File length: 13746 byte(s)
Diff to previous 14338

From Eddy:
- made more elementary constructors public .
- changed the default for these constructors to NOT create a matrix
object
- added besides AMultB, AMinusB and APlusB

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