ZLATB5
Craig Lucas, University of Manchester / NAG Ltd.
October, 2008
October, 2008
Purpose
ZLATB5 sets parameters for the matrix generator based on the type
of matrix to be generated.
of matrix to be generated.
Arguments
| PATH |
(input) CHARACTER*3
The LAPACK path name.
|
| IMAT |
(input) INTEGER
An integer key describing which matrix to generate for this
path. |
| N |
(input) INTEGER
The number of rows and columns in the matrix to be generated.
|
| TYPE |
(output) CHARACTER*1
The type of the matrix to be generated:
= 'S': symmetric matrix = 'P': symmetric positive (semi)definite matrix = 'N': nonsymmetric matrix |
| KL |
(output) INTEGER
The lower band width of the matrix to be generated.
|
| KU |
(output) INTEGER
The upper band width of the matrix to be generated.
|
| ANORM |
(output) DOUBLE PRECISION
The desired norm of the matrix to be generated. The diagonal
matrix of singular values or eigenvalues is scaled by this value. |
| MODE |
(output) INTEGER
A key indicating how to choose the vector of eigenvalues.
|
| CNDNUM |
(output) DOUBLE PRECISION
The desired condition number.
|
| DIST |
(output) CHARACTER*1
The type of distribution to be used by the random number
generator. |