inuse

    inuse           1560 modules/up/src/Core/gnu/malloc.c   assert(!inuse(p));
    inuse           1571 modules/up/src/Core/gnu/malloc.c     assert (next == top || inuse(next));
    inuse           1591 modules/up/src/Core/gnu/malloc.c   assert(inuse(p));
    inuse           1608 modules/up/src/Core/gnu/malloc.c   else if (!inuse(next))
    inuse           2490 modules/up/src/Core/gnu/malloc.c     if (next == top || !inuse(next))
    inuse           2948 modules/up/src/Core/gnu/malloc.c       if (!inuse(p)) return 0;
    inuse           2981 modules/up/src/Core/gnu/malloc.c            q < top && inuse(q) && (long)(chunksize(q)) >= (long)MINSIZE;