Desire to allocate bit in DT_PARM bitmask for DEC FORMAT compatibility purposes

Jakub Jelinek jakub@redhat.com
Fri Mar 23 09:35:00 GMT 2018


On Fri, Mar 23, 2018 at 09:12:21AM +0100, Jakub Jelinek wrote:
> On Thu, Mar 22, 2018 at 07:07:11PM -0700, Jerry DeLisle wrote:
> > > But in the tables I referenced and in the new code we want 15, 7, 2
> > > respectively.
> > 
> > The widths we use now were picked specifically to assure that values written
> > and then read back in result in the same values.
> > 
> > I have some philosophical questions.
> > 
> > 1) Why do you want 15, 7, 2? Why is this so critical?
> 
> Because that is what all those compilers document and agree on.
> See e.g.
> https://software.intel.com/en-us/node/678750#32937290-265D-4805-B2B7-4E78F6AAD0D8
> for Intel documentation, I'm sure Jeff has links to other documentations.

Oracle:
https://docs.oracle.com/cd/E19957-01/805-4939/6j4m0vnc3/index.html#z4000743746d

	Jakub



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