Function temp_resist

src/eat.c:452–469

if 'prop' is only set because of a timed value (so not an intrinsic attribute or because of polymorph shape or worn or carried gear), return its timeout, otherwise return 0; used by enlightenment */

   attribute or because of polymorph shape or worn or carried gear), return
   its timeout, otherwise return 0; used by enlightenment */
long
temp_resist(int prop)
{
    struct prop *p = &u.uprops[prop];
    long timeout = p->intrinsic & TIMEOUT;

    if (timeout
        /* and if not also protected by polymorph form */
        && (p->intrinsic & ~TIMEOUT) == 0L
        /* and not by worn gear (dragon armor) */
        && !p->extrinsic
        /* and property is not blocked; we don't expect this, but if it
           is then the timeout doesn't matter so we won't extend that */
        && !p->blocked) {
        return timeout;
    }
    return 0L;
}

/* if temporary acid or stoning resistance is timing out while eating
   something which that resistance is protecting against, caller will