Integer math question

Derek Ledbetter derekledbetter at mindspring.com
Sun Jan 4 12:02:41 CET 2004


On Sat, 3 Jan 2004 8:32:07 -0800, Frank wrote
(in message <3987e01c.0401030832.114c6f2a at posting.google.com>):

> In C++
> 
> i = 5 / 10 	and
> i = -5 / 10 	both have the same result 0.

Actually this is implementation defined in C89 and standard C++.  Either
-5/10 == 0 and -5%10 == -5, as in your implementation, or -5/10 == -1
and -5%10 == 5, like Python.  In C99, and possibly a future version of
C++, it's always done the first way (rounding towards zero).

-- 
Derek Ledbetter
derekl at serve.com

Heavy boots of lead 
fills his victims full of dread 
Running as fast as they can 
Iron Man lives again! 





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