Add Markowitz-ordered Gaussian elimination algorithm.
authorVitaly Magerya <vmagerya@gmail.com>
Thu, 31 May 2018 15:43:56 +0000 (17:43 +0200)
committerRichard Kreckel <kreckel@ginac.de>
Thu, 31 May 2018 15:43:56 +0000 (17:43 +0200)
commite432b3743d3d32f6060600af580e49d7033dcae9
treeac2460077efc4420251f3cd6cbbde7d24c4435cd
parentf49f9a14764515fd7c2ddc20d7c7cb651ba25cc0
Add Markowitz-ordered Gaussian elimination algorithm.

This algorithm avoids the 'fill-in' problem of Gaussian elimination
and significantly improves the times for solving large sparse systems.
See: <https://www.ginac.de/pipermail/ginac-list/2018-May/002202.html>.
AUTHORS
check/check_lsolve.cpp
ginac/flags.h
ginac/inifcns.cpp
ginac/matrix.cpp
ginac/matrix.h