Re: Arithmetic Shift

[Ben Pfaff]

Dave Goodell <address@hidden> writes:

> On Dec 10, 2010, at 11:33 AM CST, Ben Pfaff wrote:
>
>> Paul Eggert <address@hidden> writes:
>> 
>>> On 12/07/10 20:41, Mike Gibson wrote:
>>>> Does a test already exist that checks for if the >> operator in C does
>>>> arithmetic shift?
>>> 
>>> Doesn't this suffice, without dragging Autoconf into it?
>>> 
>>> #if -1 >> 1 == -1
>> 
>> Is it even necessary to drag the preprocessor into it?
>> 
>>        if (-1 >> 1 == 1)
>
> Careful, that expression will probably always evaluate to
> false.

Oops, I just failed to carefully re-type Paul's expression.  You
can mentally apply the obvious fix.
-- 
Ben Pfaff 
http://benpfaff.org