- AP
*(input/output)***REAL**or**COMPLEX**array, shape with , where is the order of .

On entry, the upper or lower triangle of matrix in packed storage. The elements are stored columnwise as follows:

On exit, the factor or from the Cholesky factorization or , in the same storage format as .- B
- (
*input/output*)**REAL**or**COMPLEX**array, shape with or shape with .

On entry, the matrix .

On exit, the solution matrix . - UPLO
*Optional**(input)***CHARACTER(LEN=1)**

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

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

Susan Blackford 2001-08-19