- A
- (
*input/output*)**REAL**or**COMPLEX**rectangular array, shape .

On entry, the matrix .

On exit, if , is overwritten by details of its factorization. If , is overwritten by details of its factorization. - B
- (
*input/output*)**REAL**or**COMPLEX**array, shape with (**B**,1) (**A**,1), (**A**,2)) or shape with .

On entry, the matrix .

On exit, the solution matrix**X**. There are four cases:

- TRANS
*Optional*(*input*)**CHARACTER(LEN=1)**.

Specifies the form of the system of equations:

Default value: 'N'.- INFO
*Optional*(*output*)**INTEGER**

If is not present and an error occurs, then the program is terminated with an error message.

Susan Blackford 2001-08-19