[Python-Dev] Boolean transition

[Tim Peters]

[David Abrahams]
> Actually, I'm a C++ guy: && and || return false or true.
> I think 'C99' also got some kind of _Bool type, but I don't know how it
> acts.

#define bool _Bool
#define false 0
#define true 1
#define __bool_true_false_are_defined 1

are in <stdbool.h>.  _Bool is an unsigned integral type, subject to the
usual promotions.  Just about the only twist beyond that is that conversion
of a scalar s to _Bool yields 1 if and only if s != 0.  So, e.g.,

    bool b = 0.16; /* sets b to 1 */

&& and || haven't changed (return int 0 or int 1).