TESTING/LIN/dqrt12.f(3)

NAME
TESTING/LIN/dqrt12.f

SYNOPSIS

  Functions/Subroutines
double precision function dqrt12 (m, n, a, lda, s, work, lwork)
DQRT12

Function/Subroutine Documentation

  double precision function dqrt12 (integer m, integer n, double precision, dimension( lda, * ) a, integer lda, double precision, dimension( * ) s, double precision, dimension( lwork ) work, integer lwork)

DQRT12

Purpose:

     DQRT12 computes the singular values `svlues' of the upper trapezoid
     of A(1:M,1:N) and returns the ratio
          || svlues - s ||/(||s||*eps*max(M,N))

Parameters
    M

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

    N

              N is INTEGER
              The number of columns of the matrix A.

    A

              A is DOUBLE PRECISION array, dimension (LDA,N)
              The M-by-N matrix A. Only the upper trapezoid is referenced.

    LDA

              LDA is INTEGER
              The leading dimension of the array A.

    S

              S is DOUBLE PRECISION array, dimension (min(M,N))
              The singular values of the matrix A.

    WORK

              WORK is DOUBLE PRECISION array, dimension (LWORK)

    LWORK

              LWORK is INTEGER
              The length of the array WORK. LWORK >= max(M*N + 4*min(M,N) +
              max(M,N), M*N+2*MIN( M, N )+4*N).

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 88 of file dqrt12.f.

Author

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