On 5/4/04 5:50 AM, "Richard Peters" <r.a.peters@student.tue.nl> wrote:
----- Original Message ----- From: "Joel Young" <jdy@cs.brown.edu>
This program
<snip>
produces:
9 1200144722375 11 21355614624707
as output using g++ (GCC) 3.3.2 20031022 (Red Hat Linux 3.3.2-1)
Why?
Because the second output is in octal notation. In the implementation of the stream operators, I tested the ios flags for hex and dec, and assumed octal when the other two flags aren't set. It turns out that the library shipped with gcc doesn't set any flag on std::cerr, so my library assumed octal output. Replacing cerr with cout in your example shows the difference. The workaround for this is to replace lines 64-69 of big_integer/stream_operators.hpp with:
if (flags & std::ios_base::oct) base = 8; else if (flags & std::ios_base::hex) base = 16; else // if (flags & std::ios_base::dec) base = 10;
It's probably better to make that a permanent change. I think that unspecified combination of the base flags is supposed to imply decimal, not octal! (I looked at the way the locales read/write stuff in the standard document [1998 version] at section 22.2.2.) -- Daryle Walker Mac, Internet, and Video Game Junkie darylew AT hotmail DOT com