[Cfp-interest 1297] N2321

[Fred J. Tydeman]

On Mon, 22 Apr 2019 10:08:28 -0700 Jim Thomas wrote:
>
>> N2321<http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2321.htm> 2018/12/10 Tydeman, Nextafter/nexttoward/nextup/nextdown
>
>A patch for double-double. Why is this definition preferable? With this definition of nextup etc., how does one determine the actual next-up value? This is important for testing monotonicity, for example.
>

The proposed definition makes the next* functions be consistent on all implementations.
But, as you point out, that might not be useful w.r.t.  monotonicity.

If left alone, how does one get the next normalized number for double-double?


---
Fred J. Tydeman        Tydeman Consulting
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