Module: ppl/ppl Branch: master Commit: fb8063c03702de01c22e136ef8a12bb2109b28f1 URL: http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=fb8063c03702d...

Author: Enea Zaffanella zaffanella@cs.unipr.it Date: Sun Aug 15 15:24:43 2010 +0200

Improved doxygen docs for Matrix::permute_columns().

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src/Matrix.defs.hh | 8 ++++++-- 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/Matrix.defs.hh b/src/Matrix.defs.hh index 2ee3a24..294d40e 100644 --- a/src/Matrix.defs.hh +++ b/src/Matrix.defs.hh @@ -279,13 +279,17 @@ public:

The \p cycles vector contains, one after the other, the non-trivial cycles (i.e., the cycles of length greater than one) - of a permutation of non-zero column indexes. Each cycle is - terminated by zero. For example, assuming the matrix has 6 + of a permutation of \e non-zero column indexes. Each cycle is + terminated by zero. For example, assuming the matrix has 7 columns, the permutation \f$ { 1 \mapsto 3, 2 \mapsto 4, 3 \mapsto 6, 4 \mapsto 2, 5 \mapsto 5, 6 \mapsto 1 }\f$ can be represented by the non-trivial cycles \f$(1 3 6)(2 4)\f$ that, in turn can be represented by a vector of 6 elements containing 1, 3, 6, 0, 2, 4, 0. + + \note + The first column of the matrix, having index zero, is never involved + in a permutation. */ void permute_columns(const std::vector<dimension_type>& cycles);