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RedHat 9 (Linux i386) - man page for slabad (redhat section l)

SLABAD(l)					)					SLABAD(l)

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

SYNOPSIS
       SUBROUTINE SLABAD( SMALL, LARGE )

	   REAL 	  LARGE, SMALL

PURPOSE
       SLABAD takes as input the values computed  by  SLAMCH  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 SLAMCH.  This subroutine is needed because SLAMCH does not compensate for poor
       arithmetic in the upper half of the exponent range, as is found on a Cray.

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

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

LAPACK version 3.0			   15 June 2000 				SLABAD(l)


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