On 10/04/17 22:19, Andres Freund wrote:
> I guess the motivation is that it's not entirely clear what happens with
> the sign bit, when shifting.

Indeed, certain one's complement CPUs even "outlived" C99 by a small
margin, as it were:
http://mainframe.typepad.com/blog/2012/10/sad-day-unisys-abandons-its-mainframe-processors.html

And the respective ABI will be around for some time to come, apparently:
https://www.theregister.co.uk/2016/03/31/free_x86_mainframes_for_all_virtual_mainframes_that_is

:-)

-- 
Markus Nullmeier            http://www.g-vo.org
German Astrophysical Virtual Observatory (GAVO)



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