LAPACK 3.11.0
LAPACK: Linear Algebra PACKage
Loading...
Searching...
No Matches

◆ dlatb9()

subroutine dlatb9 ( character*3  path,
integer  imat,
integer  m,
integer  p,
integer  n,
character  type,
integer  kla,
integer  kua,
integer  klb,
integer  kub,
double precision  anorm,
double precision  bnorm,
integer  modea,
integer  modeb,
double precision  cndnma,
double precision  cndnmb,
character  dista,
character  distb 
)

DLATB9

Purpose:
 DLATB9 sets parameters for the matrix generator based on the type of
 matrix to be generated.
Parameters
[in]PATH
          PATH is CHARACTER*3
          The LAPACK path name.
[in]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
[in]M
          M is INTEGER
          The number of rows in the matrix to be generated.
[in]P
          P is INTEGER
[in]N
          N is INTEGER
          The number of columns in the matrix to be generated.
[out]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.
[out]KLA
          KLA is INTEGER
          The lower band width of the matrix to be generated.
[out]KUA
          KUA is INTEGER
          The upper band width of the matrix to be generated.
[out]KLB
          KLB is INTEGER
          The lower band width of the matrix to be generated.
[out]KUB
          KUA is INTEGER
          The upper band width of the matrix to be generated.
[out]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.
[out]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.
[out]MODEA
          MODEA is INTEGER
          A key indicating how to choose the vector of eigenvalues.
[out]MODEB
          MODEB is INTEGER
          A key indicating how to choose the vector of eigenvalues.
[out]CNDNMA
          CNDNMA is DOUBLE PRECISION
          The desired condition number.
[out]CNDNMB
          CNDNMB is DOUBLE PRECISION
          The desired condition number.
[out]DISTA
          DISTA is CHARACTER*1
          The type of distribution to be used by the random number
          generator.
[out]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.