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## Arguments

AB
(input/output) REAL or COMPLEX rectangular array, shape with and , where and are, respectively, the numbers of subdiagonals and superdiagonals in the band of , and is the order of .
On entry, the matrix in band storage. The diagonals of are stored in rows to of AB, so that the column of is stored in the column of AB as follows:

The remaining elements in need not be set.
On exit, details of the factorization. is an upper triangular band matrix with diagonals. These are stored in the first rows of . The multipliers that arise during the factorization are stored in the remaining rows.

B
(input/output) REAL or COMPLEX array, shape with or shape with .
On entry, the matrix .
On exit, the solution matrix .

KL
Optional (input) INTEGER.
The number of subdiagonals in the band of ().
The number of superdiagonals in the band is given by .
Default value: .

IPIV
Optional (output) INTEGER array, shape with .
The pivot indices that define the row interchanges; row of the matrix was interchanged with row .

INFO
Optional (output) INTEGER

If is not present and an error occurs, then the program is terminated with an error message.
References: [1] and [17,9,20].

Next: Examples Up: General Linear Systems Previous: Purpose   Contents   Index
Susan Blackford 2001-08-19
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