DLATB9
Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
November 2006
November 2006
Purpose
DLATB9 sets parameters for the matrix generator based on the type of
matrix to be generated.
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. |
| M |
(input) INTEGER
The number of rows in the matrix to be generated.
|
| N |
(input) INTEGER
The number of 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. |