[Bug c++/40407] Value increment problems

2009-06-13 Thread pinskia at gcc dot gnu dot org 


--- Comment #3 from pinskia at gcc dot gnu dot org  2009-06-13 19:29 ---
This is expected because long double is only 80bits (only 64bits for
significand), so adding one to unsigned long's max (64bit) will cause a
rounding to happen.


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pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|UNCONFIRMED |RESOLVED
 Resolution||INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40407

[Bug c++/40407] Value increment problems

2009-06-10 Thread pinskia at gcc dot gnu dot org 


--- Comment #2 from pinskia at gcc dot gnu dot org  2009-06-10 20:35 ---
This is called rounding.  I think you need to look at the hex values of the
long double to see what happens rather than printing out the value.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40407

[Bug c++/40407] Value increment problems

2009-06-10 Thread ivranos at freemail dot gr 


--- Comment #1 from ivranos at freemail dot gr  2009-06-10 20:30 ---
Created an attachment (id=17976)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17976&action=view)
The main.ii file produced with " g++ -ansi -pedantic-errors -Wall -save-temps
main.cc -o foobar"


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40407