Purpose

LA_SYSVX computes the solution to a linear system of equations $A\,X = B$, where $A$ is a real or complex symmetric matrix and $X$ and $B$ are rectangular matrices or vectors.
LA_HESVX computes the solution to a linear system of equations $A\,X = B$, where $A$ is a complex Hermitian matrix and $X$ and $B$ are rectangular matrices or vectors.
LA_SYSVX and LA_HESVX can also optionally estimate the condition number of $A$ and compute error bounds.