dlatb9.f - Man Page

subroutine dlatb9 (path, imat, m, p, n, type, kla, kua, klb, kub, anorm, bnorm, modea, modeb, cndnma, cndnmb, dista, distb)
DLATB9

DLATB9

Purpose:

 DLATB9 sets parameters for the matrix generator based on the type of
 matrix to be generated.

Parameters

PATH

          PATH is CHARACTER*3
          The LAPACK path name.

IMAT

          IMAT is INTEGER
          An integer key describing which matrix to generate for this
          path.
          = 1:   A: diagonal, B: upper triangular
          = 2:   A: upper triangular, B: upper triangular
          = 3:   A: lower triangular, B: upper triangular
          Else:  A: general dense, B: general dense

M

          M is INTEGER
          The number of rows in the matrix to be generated.

P

          P is INTEGER

N

          N is INTEGER
          The number of columns in the matrix to be generated.

TYPE

          TYPE is CHARACTER*1
          The type of the matrix to be generated:
          = 'S':  symmetric matrix;
          = 'P':  symmetric positive (semi)definite matrix;
          = 'N':  nonsymmetric matrix.

KLA

          KLA is INTEGER
          The lower band width of the matrix to be generated.

KUA

          KUA is INTEGER
          The upper band width of the matrix to be generated.

KLB

          KLB is INTEGER
          The lower band width of the matrix to be generated.

KUB

          KUA is INTEGER
          The upper band width of the matrix to be generated.

ANORM

          ANORM is DOUBLE PRECISION
          The desired norm of the matrix to be generated.  The diagonal
          matrix of singular values or eigenvalues is scaled by this
          value.

BNORM

          BNORM is DOUBLE PRECISION
          The desired norm of the matrix to be generated.  The diagonal
          matrix of singular values or eigenvalues is scaled by this
          value.

MODEA

          MODEA is INTEGER
          A key indicating how to choose the vector of eigenvalues.

MODEB

          MODEB is INTEGER
          A key indicating how to choose the vector of eigenvalues.

CNDNMA

          CNDNMA is DOUBLE PRECISION
          The desired condition number.

CNDNMB

          CNDNMB is DOUBLE PRECISION
          The desired condition number.

DISTA

          DISTA is CHARACTER*1
          The type of distribution to be used by the random number
          generator.

DISTB

          DISTB is CHARACTER*1
          The type of distribution to be used by the random number
          generator.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 167 of file dlatb9.f.