[GiNaC-devel] [SCM] GiNaC -- a C++ library for symbolic computations branch, master, updated. release_1-4-0-454-gd56a0f7

[Richard B. Kreckel]

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       via  aa1ddc484c2a22a1ab2b38047cbd221f9b37750a (commit)
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- Log -----------------------------------------------------------------
commit d56a0f74afa5380a1730599c3b1b21f34be2f061
Author: Richard Kreckel <kreckel at ginac.de>
Date:   Sun Jul 19 00:04:49 2015 +0200

    Speed up pow(+(...),n).expand() where n>2.
    
    This new algorithm is faster than the old one because it re-uses
    multinomial coefficients as much as possible.

commit aa1ddc484c2a22a1ab2b38047cbd221f9b37750a
Author: Richard Kreckel <kreckel at ginac.de>
Date:   Sat Jul 18 23:56:55 2015 +0200

    Fix pow(+(...),2).expand().
    
    Due to a failure to expand result terms, expand((sqrt(1+x)+y*sqrt(1+x))^2)
    returned 1+y^2+x+x*y^2+2*y*(1+x). Note that 2*y*(1+x) was not expanded
    to 2*y+2*y*x.

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

Summary of changes:
 check/exam_paranoia.cpp |  13 ++
 check/timer.cpp         |   1 -
 ginac/add.cpp           |   4 +-
 ginac/power.cpp         | 384 ++++++++++++++++++++++++++++++++++++++----------
 4 files changed, 320 insertions(+), 82 deletions(-)


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GiNaC -- a C++ library for symbolic computations