HP MLIB User's Guide Vol. 2 7th Ed.

784 HP MLIB LAPACK User’s Guide
pdgssvx/ pzgssvx, pdgssvx_ABglobal/pzgssvx_ABglobal Solve systems of linear equations
info
(output) = 0
: successful exit
> 0: if info=i, and i is
<= A->ncol: U(i, i) is exactly zero. The factorization has
been completed, but the factor U is exactly singular, so
the solution could not be computed.
> A->ncol: Number of bytes allocated when memory
allocation failure occurred plus A->ncol.