anyone know the semantics for _gfortran_caf_this_image(0)?

[Steve Kargl]

Thanks for the insight.

-- 
steve


On Mon, Jan 08, 2018 at 09:58:32PM +0100, Andre Vehreschild wrote:
> Hi Steve,
> 
> Nop the 0 in caf_this_image() indexes the team for which the current images number is queried. At least that was the plan in the initial design. So supplying 0 is safe.
> 
> Regards, 
> Andre
> 
> Am 8. Januar 2018 20:55:15 MEZ schrieb Steve Kargl <sgk@troutmask.apl.washington.edu>:
> >Well, I have a fully functional RANDOM_INIT implemented with
> >the caveat that I have no idea what _gfortran_caf_this_image(0)
> >does.
> >
> >If I compile 
> >
> >function foo() result(n)
> >  integer n
> >  n = this_image()
> >end function foo
> >
> >with -fdump-tree-original -fcoarray=lib -c, I see 
> >
> >foo ()
> >{
> >  integer(kind=4) n;
> >  n = _gfortran_caf_this_image (0);
> >  return n;
> >}
> >
> >I assume the argument 0 tells _gfortran_caf_this_image to 
> >return the image index of the current image.  Is this correct?
> 
> -- 
> Andre Vehreschild * Kreuzherrenstr. 8 * 52062 Aachen
> vehre@gmx.de * Tel. +49 178 3837536

-- 
Steve
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