Function h2_log2

modules/http2/h2_util.c:35–62

h2_log2(n) iff n is a power of 2 */

/* h2_log2(n) iff n is a power of 2 */
unsigned char h2_log2(unsigned int n)
{
    int lz = 0;
    if (!n) {
        return 0;
    }
    if (!(n & 0xffff0000u)) {
        lz += 16;
        n = (n << 16);
    }
    if (!(n & 0xff000000u)) {
        lz += 8;
        n = (n << 8);
    }
    if (!(n & 0xf0000000u)) {
        lz += 4;
        n = (n << 4);
    }
    if (!(n & 0xc0000000u)) {
        lz += 2;
        n = (n << 2);
    }
    if (!(n & 0x80000000u)) {
        lz += 1;
    }

    return 31 - lz;
}

size_t h2_util_hex_dump(char *buffer, size_t maxlen,
                        const char *data, size_t datalen)