Who does that w/ bit fields? You either check if it's true/false or you use the expected bit operations.
On Jun 19, 2014, at 9:29 AM, Yann Ylavic <ylavic....@gmail.com> wrote: > 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 >
