[Bug c/31007] wrong 64bit constant calculation

2007-03-01 Thread hidden_peak at mail dot ru 


--- Comment #1 from hidden_peak at mail dot ru  2007-03-01 12:30 ---
 (instead of 7fff 7fff)

Correct should be fff and fff.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31007

[Bug c/31007] wrong 64bit constant calculation

2007-03-01 Thread schwab at suse dot de 


--- Comment #2 from schwab at suse dot de  2007-03-01 14:37 ---
Why do you think efff is wrong?


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schwab at suse dot de changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31007

[Bug c/31007] wrong 64bit constant calculation

2007-03-01 Thread hidden_peak at mail dot ru 


--- Comment #3 from hidden_peak at mail dot ru  2007-03-01 14:48 ---
~((1ULL  63ULL)  3ULL):

(   0001  63) - 8000    (unsigned!)
(8000     3 ) - f000    (due to sign bit)
~(f000   )  - 0fff   

Right?


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hidden_peak at mail dot ru changed:

   What|Removed |Added

 Status|RESOLVED|UNCONFIRMED
 Resolution|INVALID |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31007

[Bug c/31007] wrong 64bit constant calculation

2007-03-01 Thread schwab at suse dot de 


--- Comment #4 from schwab at suse dot de  2007-03-01 15:00 ---
Shifting unsigned numbers doesn't replicate the sign bit.


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schwab at suse dot de changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31007

[Bug c/31007] wrong 64bit constant calculation

2007-03-01 Thread hidden_peak at mail dot ru 


--- Comment #5 from hidden_peak at mail dot ru  2007-03-01 15:05 ---
Do you mean this treatment: ~((1ULL  63ULL)  3ULL) - ~(1ULL  60ULL) -
efff ?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31007

[Bug c/31007] wrong 64bit constant calculation

2007-03-01 Thread hidden_peak at mail dot ru 


--- Comment #6 from hidden_peak at mail dot ru  2007-03-01 15:11 ---
 Shifting unsigned numbers doesn't replicate the sign bit.

unsigned ui3 = ~((1  31)  3);

printf( %x\n, ui3 );

give me wrong result fff ?


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hidden_peak at mail dot ru changed:

   What|Removed |Added

 Status|RESOLVED|UNCONFIRMED
 Resolution|INVALID |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31007

[Bug c/31007] wrong 64bit constant calculation

2007-03-01 Thread hidden_peak at mail dot ru 


--- Comment #7 from hidden_peak at mail dot ru  2007-03-01 15:13 ---
My mistake. Sorry.


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hidden_peak at mail dot ru changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31007