tree 5bac6229681deae248638cf30bef1b89cd28a696
parent 59d7f9842eb98ac734af3cba91f81a0edd1038eb
author Sameer Agarwal <sameeragarwal@google.com> 1428311054 -0700
committer Sameer Agarwal <sameeragarwal@google.com> 1428311806 -0700

Revert a call to SolveUpperTriangularUsingCholesky.

The call to llt in backsubstitute seems to be using one
of the fixed size specializations which is best done with
an inline call to llt/ldlt rather than introducing yet another
variant of the SolverUpperTriangularUsingCholesky and calling it.

Also change the way SolverUpperTriangularUsingCholesky handles
error. It always computes the solution even if it is garbage
and then returns the error code.

This ensures that the previous code that depends on unconditional
computation still works.

Change-Id: Idb1e6efdae9a3775a072e3b87cde02e0bbddb319