[cairo-bugs] [Bug 4846] Performance problems for GTK+/Cairo on MacOS X

[bugzilla-daemon at freedesktop.org]

Please do not reply to this email: if you want to comment on the bug, go to    
       
the URL shown below and enter yourcomments there.     
   
https://bugs.freedesktop.org/show_bug.cgi?id=4846          
     




------- Additional Comments From cworth at cworth.org  2005-10-26 11:44 -------
I'm glad to see some more close examination of _cairo_fixed_from_double.
For such an elementary function, it sure needs (and is getting) an awful lot of
attention.

With your current eye on correctness (and your environment in which the current
code fails) could you experiment with the correctness of the following proposed
performance optimization for _cairo_fixed_from_double:

http://thread.gmane.org/gmane.comp.lib.cairo/5228

As for round, we could certainly use that when available. But so far, we haven't
made C99 a hard requirement for compiling cairo. So, like the performance patch
I linked to above, using round would also require appropriate configure-time
checks for suitability. (Though the round check would be a lot easier than the
checks for IEEE double-precision floating-point necessary for the performance
optimization I think).          
     
     
--           
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email         
     
------- You are receiving this mail because: -------
You are the QA contact for the bug, or are watching the QA contact.