(j3.2006) (SC22WG5.5355) [ukfortran] From a colleague

[Bill Long]

On Oct 28, 2014, at 2:20 PM, Toon Moene <toon at moene.org> wrote:

> On 10/28/2014 06:57 PM, Bill Long wrote:
> 
>> It was not clear to me whether the original code was branching based on the value of a REAL or an INTEGER expression.  In the integer case, there is no question.
> 
> I hope you are right that "there is no question" on arithmetic if when 
> interpreting it Fortran 95 - wise.
> 
> Is -0 greater than, equal to or less than +0 ?


equal to.  4.4.2.2p1.

The integer type includes a zero value, which is considered to be neither negative nor positive. The value of a signed integer zero is the same as the value of an unsigned integer zero.


Cheers,
Bill


> 
> Kind regards,
> 
> -- 
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Bill Long                                                                       longb at cray.com
Fortran Technical Suport  &                                  voice:  651-605-9024
Bioinformatics Software Development                     fax:  651-605-9142
Cray Inc./ Cray Plaza, Suite 210/ 380 Jackson St./ St. Paul, MN 55101