[J3] [EXTERNAL] [BULK] Re: Upcoming gfortran 15 will contain an implementation of unsigned numbers

Fred J. Tydeman tydeman at tybor.com
Tue Oct 15 14:21:45 UTC 2024


On Tue, 15 Oct 2024 15:00:43 +0000 Clune, Thomas L. (GSFC-6101) via J3 wrote:
>
>The history of this feature  has a twist.   There was a paper proposing this feature for F202y and it *passed*.   However, it did not garner the necessary votes to make it onto the proverbial bus for the WG5 list.
>

What happens when two large unsigned numbers are added together?
  An error
  Wrap modulo 2**(number of bits in number); which is what C does
  Saturate to the largest value
  Something else


---
Fred J. Tydeman        Tydeman Consulting
tydeman at tybor.com      Testing, numerics, programming
+1 (702) 608-6093      Vice-chair of INCITS/C (ANSI "C")
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