slabad.f

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*> \brief \b SLABAD
*
*  =========== DOCUMENTATION ===========
*
* Online html documentation available at
*            http://www.netlib.org/lapack/explore-html/
*
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*> [TXT]</a>
*
*  Definition:
*  ===========
*
*       SUBROUTINE SLABAD( SMALL, LARGE )
*
*       .. Scalar Arguments ..
*       REAL               LARGE, SMALL
*       ..
*
*
*> \par Purpose:
*  =============
*>
*> \verbatim
*>
*> SLABAD is a no-op and kept for compatibility reasons. It used
*> to correct the overflow/underflow behavior of machines that
*> are not IEEE-754 compliant.
*> \endverbatim
*
*  Arguments:
*  ==========
*
*> \param[in,out] SMALL
*> \verbatim
*>          SMALL is REAL
*>          On entry, the underflow threshold as computed by SLAMCH.
*>          On exit, the unchanged value SMALL.
*> \endverbatim
*>
*> \param[in,out] LARGE
*> \verbatim
*>          LARGE is REAL
*>          On entry, the overflow threshold as computed by SLAMCH.
*>          On exit, the unchanged value LARGE.
*> \endverbatim
*
*  Authors:
*  ========
*
*> \author Univ. of Tennessee
*> \author Univ. of California Berkeley
*> \author Univ. of Colorado Denver
*> \author NAG Ltd.
*
*> \ingroup labad
*
*  =====================================================================
      SUBROUTINE slabad( SMALL, LARGE )
*
*  -- LAPACK auxiliary routine --
*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
*
*     .. Scalar Arguments ..
      REAL               LARGE, SMALL
*     ..
*
*  =====================================================================
*
*     .. Intrinsic Functions ..
      INTRINSIC          log10, sqrt
*     ..
*     .. Executable Statements ..
*
*     If it looks like we're on a Cray, take the square root of
*     SMALL and LARGE to avoid overflow and underflow problems.
*
*      IF( LOG10( LARGE ).GT.2000. ) THEN
*         SMALL = SQRT( SMALL )
*         LARGE = SQRT( LARGE )
*      END IF
*
      RETURN
*
*     End of SLABAD
*
      SUBROUTINE slabad( SMALL, LARGE ) …
      END