zgennd()

logical function zgennd	(	integer	m,
		integer	n,
		complex*16, dimension( lda, * )	a,
		integer	lda
	)

ZGENND

Purpose:

    ZGENND tests that its argument has a real, non-negative diagonal.

Parameters

[in]	M	M is INTEGER The number of rows in A.
[in]	N	N is INTEGER The number of columns in A.
[in]	A	A is COMPLEX*16 array, dimension (LDA, N) The matrix.
[in]	LDA	LDA is INTEGER Leading dimension of A.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 67 of file zgennd.f.

*
*  -- LAPACK test routine --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*
*     .. Scalar Arguments ..
      INTEGER M, N, LDA
*     ..
*     .. Array Arguments ..
      COMPLEX*16 A( LDA, * )
*     ..
*
*  =====================================================================
*
*     .. Parameters ..
      REAL               ZERO
      parameter( zero = 0.0e0 )
*     ..
*     .. Local Scalars ..
      INTEGER I, K
      COMPLEX*16 AII
*     ..
*     .. Intrinsics ..
      INTRINSIC min, dble, dimag
*     ..
*     .. Executable Statements ..
      k = min( m, n )
      DO i = 1, k
         aii = a( i, i )
         IF( dble( aii ).LT.zero.OR.dimag( aii ).NE.zero ) THEN
            zgennd = .false.
            RETURN
         END IF
      END DO
      zgennd = .true.
      RETURN

Here is the call graph for this function:

Here is the caller graph for this function: