TESTING/LIN/slattr.f(3)    Library Functions Manual    TESTING/LIN/slattr.f(3)

NAME
       TESTING/LIN/slattr.f

SYNOPSIS
   Functions/Subroutines
       subroutine slattr (imat, uplo, trans, diag, iseed, n, a, lda, b, work,
           info)
           SLATTR

Function/Subroutine Documentation
   subroutine slattr (integer imat, character uplo, character trans, character
       diag, integer, dimension( 4 ) iseed, integer n, real, dimension( lda, *
       ) a, integer lda, real, dimension( * ) b, real, dimension( * ) work,
       integer info)
       SLATTR

       Purpose:


            SLATTR generates a triangular test matrix.
            IMAT and UPLO uniquely specify the properties of the test
            matrix, which is returned in the array A.

       Parameters
           IMAT

                     IMAT is INTEGER
                     An integer key describing which matrix to generate for this
                     path.

           UPLO

                     UPLO is CHARACTER*1
                     Specifies whether the matrix A will be upper or lower
                     triangular.
                     = 'U':  Upper triangular
                     = 'L':  Lower triangular

           TRANS

                     TRANS is CHARACTER*1
                     Specifies whether the matrix or its transpose will be used.
                     = 'N':  No transpose
                     = 'T':  Transpose
                     = 'C':  Conjugate transpose (= Transpose)

           DIAG

                     DIAG is CHARACTER*1
                     Specifies whether or not the matrix A is unit triangular.
                     = 'N':  Non-unit triangular
                     = 'U':  Unit triangular

           ISEED

                     ISEED is INTEGER array, dimension (4)
                     The seed vector for the random number generator (used in
                     SLATMS).  Modified on exit.

           N

                     N is INTEGER
                     The order of the matrix to be generated.

           A

                     A is REAL array, dimension (LDA,N)
                     The triangular matrix A.  If UPLO = 'U', the leading n by n
                     upper triangular part of the array A contains the upper
                     triangular matrix, and the strictly lower triangular part of
                     A is not referenced.  If UPLO = 'L', the leading n by n lower
                     triangular part of the array A contains the lower triangular
                     matrix, and the strictly upper triangular part of A is not
                     referenced.  If DIAG = 'U', the diagonal elements of A are
                     set so that A(k,k) = k for 1 <= k <= n.

           LDA

                     LDA is INTEGER
                     The leading dimension of the array A.  LDA >= max(1,N).

           B

                     B is REAL array, dimension (N)
                     The right hand side vector, if IMAT > 10.

           WORK

                     WORK is REAL array, dimension (3*N)

           INFO

                     INFO is INTEGER
                     = 0:  successful exit
                     < 0: if INFO = -k, the k-th argument had an illegal value

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Definition at line 131 of file slattr.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

LAPACK                          Version 3.12.0         TESTING/LIN/slattr.f(3)