dlatb5.f3

Usage

Functions/Subroutines

subroutine dlatb5 (path, imat, n, type, kl, ku, anorm, mode, cndnum, dist)
DLATB5

Function/Subroutine Documentation

subroutine dlatb5 (character*3 path, integer imat, integer n, character type, integer kl, integer ku, double precision anorm, integer mode, double precision cndnum, character dist)

DLATB5

Purpose:

!>
!> DLATB5 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.
!>

!>          N is INTEGER
!>          The number of rows and 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
!>

!>          KL is INTEGER
!>          The lower band width of the matrix to be generated.
!>

!>          KU 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.
!>

MODE

!>          MODE is INTEGER
!>          A key indicating how to choose the vector of eigenvalues.
!>

CNDNUM

!>          CNDNUM is DOUBLE PRECISION
!>          The desired condition number.
!>

DIST

!>          DIST 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 112 of file dlatb5.f.