ZQRT15 generates a matrix with full or deficient rank and of various


 norms.

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 COMPLEX*16 array, dimension (LDA,N)


          The M-by-N matrix A.

LDA

          LDA is INTEGER


          The leading dimension of the array A.

B

          B is COMPLEX*16 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 norm of A.

NORMB

          NORMB is DOUBLE PRECISION


          one-norm norm of B.

ISEED

          ISEED is integer array, dimension (4)


          seed for random number generator.

WORK

          WORK is COMPLEX*16 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)

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