TESTING/LIN/dqrt15.f(3)    Library Functions Manual    TESTING/LIN/dqrt15.f(3)

NAME
       TESTING/LIN/dqrt15.f

SYNOPSIS
   Functions/Subroutines
       subroutine dqrt15 (scale, rksel, m, n, nrhs, a, lda, b, ldb, s, rank,
           norma, normb, iseed, work, lwork)
           DQRT15

Function/Subroutine Documentation
   subroutine dqrt15 (integer scale, integer rksel, integer m, integer n,
       integer nrhs, double precision, dimension( lda, * ) a, integer lda,
       double precision, dimension( ldb, * ) b, integer ldb, double precision,
       dimension( * ) s, integer rank, double precision norma, double
       precision normb, integer, dimension( 4 ) iseed, double precision,
       dimension( lwork ) work, integer lwork)
       DQRT15

       Purpose:


            DQRT15 generates a matrix with full or deficient rank and of various
            norms.

       Parameters
           SCALE

                     SCALE is INTEGER
                     SCALE = 1: normally scaled matrix
                     SCALE = 2: matrix scaled up
                     SCALE = 3: matrix scaled down

           RKSEL

                     RKSEL is INTEGER
                     RKSEL = 1: full rank matrix
                     RKSEL = 2: rank-deficient matrix

           M

                     M is INTEGER
                     The number of rows of the matrix A.

           N

                     N is INTEGER
                     The number of columns of A.

           NRHS

                     NRHS is INTEGER
                     The number of columns of B.

           A

                     A is DOUBLE PRECISION array, dimension (LDA,N)
                     The M-by-N matrix A.

           LDA

                     LDA is INTEGER
                     The leading dimension of the array A.

           B

                     B is DOUBLE PRECISION array, dimension (LDB, NRHS)
                     A matrix that is in the range space of matrix A.

           LDB

                     LDB is INTEGER
                     The leading dimension of the array B.

           S

                     S is DOUBLE PRECISION array, dimension MIN(M,N)
                     Singular values of A.

           RANK

                     RANK is INTEGER
                     number of nonzero singular values of A.

           NORMA

                     NORMA is DOUBLE PRECISION
                     one-norm of A.

           NORMB

                     NORMB is DOUBLE PRECISION
                     one-norm of B.

           ISEED

                     ISEED is integer array, dimension (4)
                     seed for random number generator.

           WORK

                     WORK is DOUBLE PRECISION array, dimension (LWORK)

           LWORK

                     LWORK is INTEGER
                     length of work space required.
                     LWORK >= MAX(M+MIN(M,N),NRHS*MIN(M,N),2*N+M)

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Definition at line 146 of file dqrt15.f.

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

LAPACK                          Version 3.12.0         TESTING/LIN/dqrt15.f(3)