Gael Guennebaud b4c974d059 Added triangular assignement, e.g.:
m.upper() = a+b;
only updates the upper triangular part of m.
Note that:
 m = (a+b).upper();
updates all coefficients of m (but half of the additions
will be skiped)

Updated back/forward substitution to better use Eigen's capability.
2008-04-26 19:20:26 +00:00
..
2008-04-26 19:20:26 +00:00
2008-04-26 19:20:26 +00:00