Arguments

A

(input/output) REAL or COMPLEX array, shape $(:,:)$ with $size({\bf A},1) =n$ and $size({\bf A},2) =m$.
On entry, the matrix $A$.
On exit, the contents of A are destroyed.

B

(input/output) REAL or COMPLEX array, shape $(:,:)$ with $size({\bf B},1) = n$ and $size({\bf B},2) =p$.
On entry, the matrix $B$.
On exit, the contents of B are destroyed.

D

(input/output) REAL or COMPLEX array, shape $(:)$ with $size({\bf D}) = n$.
On entry, the vector $d$.
On exit, the contents of D are destroyed.

X

(output) REAL or COMPLEX array, shape $(:)$ with $size({\bf X}) = m$.
The solution vector $x$.

Y

(output) REAL or COMPLEX array, shape $(:)$ with $size({\bf Y}) = p$.
The solution vector $y$.

INFO

Optional (output) INTEGER.


If ${\bf INFO}$ is not present and an error occurs, then the program is terminated with an error message.

References: [1] and [17,9,20].