sgennd()

logical function sgennd	(	integer	m,
		integer	n,
		real, dimension( lda, * )	a,
		integer	lda )

SGENND

Purpose:

!>
!>    SGENND tests that its argument has a 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 REAL 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 sgennd.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 ..
      REAL A( LDA, * )
*     ..
*
*  =====================================================================
*
*     .. Parameters ..
      REAL               ZERO
      parameter( zero = 0.0e0 )
*     ..
*     .. Local Scalars ..
      INTEGER I, K
*     ..
*     .. Intrinsics ..
      INTRINSIC min
*     ..
*     .. Executable Statements ..
      k = min( m, n )
      DO i = 1, k
         IF( a( i, i ).LT.zero ) THEN
            sgennd = .false.
            RETURN
         END IF
      END DO
      sgennd = .true.
      RETURN

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