	LOGICAL FUNCTION INVALID_R8_TO_I4 ( value )

*
*
*  This software was developed by the Thermal Modeling and Analysis
*  Project(TMAP) of the National Oceanographic and Atmospheric
*  Administration's (NOAA) Pacific Marine Environmental Lab(PMEL),
*  hereafter referred to as NOAA/PMEL/TMAP.
*
*  Access and use of this software shall impose the following
*  obligations and understandings on the user. The user is granted the
*  right, without any fee or cost, to use, copy, modify, alter, enhance
*  and distribute this software, and any derivative works thereof, and
*  its supporting documentation for any purpose whatsoever, provided
*  that this entire notice appears in all copies of the software,
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*  agrees to credit NOAA/PMEL/TMAP in any publications that result from
*  the use of this software or in any product that includes this
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*  in any advertising or publicity to endorse or promote any products
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*
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*
*
* test to see if the given REAL*8 value is convertible to an INTEGER*4

* programmer - steve hankin
* NOAA/PMEL, Seattle, WA - Tropical Modeling and Analysis Program
* written for VAX computer under VMS operating system
*
* revision 0.0 - 10/17/86
* V230:  6/26/92 - changed vax_machine.parm to accomodate limitations
*                  of Macintosh Language Systems FORTRAN:  DBLE cannot be used
*                  in a parameter definition
*       *acm* 3/12 cleanup ifdefs and unnecessary include files

	include	'vax_machine.parm'


	REAL*8	value

* max and min INTEGER*4 expressed as REAL*8
	REAL*8		test_neg
	PARAMETER     ( test_neg = -( r8_int4_max + 1 ) )

	INVALID_R8_TO_I4 = ( value .LT. test_neg )
     .                .OR. ( value .GT. r8_int4_max )

	RETURN
	END
	
