[GiNaC-devel] [SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-197-g59ec138

[Jens Vollinga]

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       via  694f839947982f5b12b6c629d5bab522c801630d (commit)
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- Log -----------------------------------------------------------------
commit 59ec13895c97ffd74979a0b811a7571f6de56386
Author: Alexei Sheplyakov <varg at metalica.kh.ua>
Date:   Sat Aug 8 13:03:15 2009 +0300

    modular_matrix: don't use STL iterators in {mul, sub}_col and friends.
    
    Not using STL iterators makes the code simpler and cleaner. Also we don't
    have to argue whether the standard ([lib.random.access.iterators]) imposes
    any pre/post-condictions on operator+=.

commit 694f839947982f5b12b6c629d5bab522c801630d
Author: Alexei Sheplyakov <varg at metalica.kh.ua>
Date:   Sat Aug 8 13:03:48 2009 +0300

    shaker_sort, permutation_sign: fix invalid use of STL iterators.
    
    According to the standard incrementing end(), and decrementing begin()
    are ill-defined operations (see [lib.forward.iterators],
    [lib.bidirectional.iterators]).

commit 526825bcee294cb20e37d8db6d5040ba0f8c428f
Author: Alexei Sheplyakov <varg at metalica.kh.ua>
Date:   Sat Aug 8 13:07:14 2009 +0300

    symmetry::calchash(): be careful to not dereference past-the-end iterator.

commit 49a44f7d55ec0d6686d3c32c7081a07d10c93274
Author: Alexei Sheplyakov <varg at metalica.kh.ua>
Date:   Sat Aug 8 13:06:36 2009 +0300

    check_parameter_G: fix pontential increment of end().
    
    Incrementing past-the-end iterator is not permitted by the standard, see
    [lib.input.iterators].

commit dda45abd8a2c408f8b3eb7959a10dfb2468ecc3a
Author: Alexei Sheplyakov <varg at metalica.kh.ua>
Date:   Sat Aug 8 13:02:47 2009 +0300

    G_eval: fix incorrect use of STL iterator.
    
    According to [lib.bidirectional.iterators] it's not OK to decrement
    an iterator pointing to the beginning of the sequence. Fortunately random
    access iterators provided by (current versions of) gcc/libstdc++ don't have
    this silly limitation, so the code which works with pointers works with
    iterators without any changes at all. However,
     - there's no guarantee that the current behavior won't change in the future
     - some non-GNU compilers are not that smart (i.e. the program segfaults
       upon when decrementing beginning-of-the-sequence iterator).

-----------------------------------------------------------------------

Summary of changes:
 ginac/factor.cpp           |   60 +++++++++++++++++---------------------------
 ginac/inifcns_nstdsums.cpp |    7 +++-
 ginac/symmetry.cpp         |    3 +-
 ginac/utils.h              |   24 +++++++++++++----
 4 files changed, 48 insertions(+), 46 deletions(-)


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GiNaC -- a C++ library for symbolic computations