Block diagonal format triangular solve

SBDISM/DBDISM/CBDISM/ZBDISM

1: Operate with transpose matrix

2: Operate with conjugate-transpose matrix

mb

Number of block rows in matrix A.

n

Number of columns in matrix C.

unitd

Type of scaling.

 

1.

Identity matrix (argument dv( ) is ignored)

 

2.

Scale on left (row scaling)

 

3.

Scale on right (column scaling)

dv( )

Diagonal scaling array of length lb*lb*mb.

alpha

Scalar parameter.

descra( )

 

 

 

Descriptor argument. Five element integer array.

descra(1)

Matrix structure.

 

0: General

 

1: Symmetric

 

2: Hermitian

 

3: Triangular

 

4: Skew (Anti)-Symmetric

 

5: Diagonal

descra(2)

Upper/Lower triangular indicator.

 

1: Lower

 

2: Upper

descra(3)

Main diagonal type.

 

0: Non-unit

 

1: Unit

descra(4)

Array base.

 

0: C/C++ compatible Not Supported

 

1: Fortran compatible

descra(5)

Repeated indices.

 

0: Unknown

 

1: No repeated indices

Chapter 4 Sparse BLAS Operations 451