C++ (Cpp) find_first_set Beispiele

Beispiel #1

Datei: bit_fl.c Projekt: BruceYi/okl4

uintptr_t
bfl_alloc(bfl_t bfl)
{
    /* Find empty int */
    int found = 0;
    int pos, i;

    for (i = bfl->curpos; i < bfl->len; i++) {
        if (bfl->bitarray[i] != 0) {
            found = 1;
            break;
        }
    }
    if (found == 0) {
        for (i = 0; i < bfl->curpos; i++) {
            if (bfl->bitarray[i] != 0) {
                found = 1;
                break;
            }
        }
    }

    if (found == 0) {
        return -1UL;
    }

    pos = find_first_set(bfl->bitarray[i]);
    /* Unset the bit */
    bfl->bitarray[i] &= ~(1UL << pos);

    if (bfl->bitarray == 0)
        bfl->curpos = (bfl->curpos + 1) % bfl->len;
    return (i * BITS_PER_LONG) + pos;
}

Beispiel #2

Datei: sys_bfl.c Projekt: vonwenm/FreeVMS

vms$pointer
sys$bfl_alloc(bfl_t bfl)
{
    unsigned int                found;
    unsigned int                i;
    unsigned int                pos;

    found = 0;

    for(i = bfl->curpos; i < bfl->len; i++)
    {
        if (bfl->bitarray[i] != 0)
        {
            found = 1;
            break;
        }
    }

    if (found == 0)
    {
        for(i = 0; i < bfl->curpos; i++)
        {
            if (bfl->bitarray[i] != 0)
            {
                found = 1;
                break;
            }
        }
    }

    if (found == 0)
    {
        return(-1);
    }

    pos = find_first_set(bfl->bitarray[i]);
    bfl->bitarray[i] &= ~(((bfl_word) 1) << pos);

    if (bfl->bitarray == 0)
    {
        bfl->curpos = (bfl->curpos + 1) % bfl->len;
    }

    return((i * BITS_PER_BFL_WORD) + pos);
}