|
| From: | Dan Sebald |
| Subject: | [Octave-bug-tracker] [bug #54572] int64 does not saturate correctly in negative direction |
| Date: | Tue, 28 Aug 2018 16:52:50 -0400 (EDT) |
| User-agent: | Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0 |
Follow-up Comment #19, bug #54572 (project octave):
The example of Comment #16 isn't failing for me:
@linux ~/octave/bug/54572 $ gcc -O2 -std=c++11 int-overflow-2.cc -lstdc++
address@hidden ~/octave/bug/54572 $ ./a.out
-9223372036854775808 + -2
u: 9223372036854775806
ux: -2
uy: -9223372036854775808
(ux & uy) < 0:
(~u): -9223372036854775807
__signbit (~u): 1
u: -9223372036854775808
-9223372036854775808
What compiler command are you using? What output are you seeing when it
fails?
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