CXML
        	    
LAPACK version 3.0
dlabad(3)

PURPOSE
  DLABAD - take as input the values computed by DLAMCH for underflow and
  overflow, and returns the square root of each of these values if the log of
  LARGE is sufficiently large

SYNTAX
  SUBROUTINE DLABAD( SMALL, LARGE )

      DOUBLE	     PRECISION LARGE, SMALL

DESCRIPTION
  DLABAD takes as input the values computed by DLAMCH for underflow and
  overflow, and returns the square root of each of these values if the log of
  LARGE is sufficiently large. This subroutine is intended to identify
  machines with a large exponent range, such as the Crays, and redefine the
  underflow and overflow limits to be the square roots of the values computed
  by DLAMCH.  This subroutine is needed because DLAMCH does not compensate
  for poor arithmetic in the upper half of the exponent range, as is found on
  a Cray.

ARGUMENTS
  SMALL	  (input/output) DOUBLE PRECISION
	  On entry, the underflow threshold as computed by DLAMCH.  On exit,
	  if LOG10(LARGE) is sufficiently large, the square root of SMALL,
	  otherwise unchanged.

  LARGE	  (input/output) DOUBLE PRECISION
	  On entry, the overflow threshold as computed by DLAMCH.  On exit,
	  if LOG10(LARGE) is sufficiently large, the square root of LARGE,
	  otherwise unchanged.