On Thu, Jun 19, 2014 at 2:59 PM, Jim Jagielski <j...@jagunet.com> wrote:
>
> On Jun 19, 2014, at 8:43 AM, yla...@apache.org wrote:
>
>> Author: ylavic
>> Date: Thu Jun 19 12:43:05 2014
>> New Revision: 1603863
>>
>> URL: http://svn.apache.org/r1603863
>> Log:
>> Use unsigned bit flags (otherwise the non-zero value to be used is -1).
>>
>
> I don't understand that at all... A bit is either 1 or 0.
>
Well, it depends on what you are doing with that bit...
#include <stdio.h>
int main(int argc, const char *argv[])
{
struct {
int s:1;
} bitfield;
bitfield.s = 1;
if (bitfield.s > 0) {
printf("positive\n");
}
else {
printf("negative or nul\n");
}
if (bitfield.s == 1) {
printf("one\n");
}
else {
printf("not one\n");
}
return 0;
}
$ ./bitfield
negative or nul
not one
