Method ReadAtMost64Bits

libs/coding/bit_streams.hpp:193–208

Same as Read but accept up to 64 bits to read.

  // Same as Read but accept up to 64 bits to read.
  uint64_t ReadAtMost64Bits(uint8_t n)
  {
    ASSERT_LESS_OR_EQUAL(n, 64, ());

    uint64_t result = 0;

    READ_BYTE(0);
    READ_BYTE(1);
    READ_BYTE(2);
    READ_BYTE(3);
    READ_BYTE(4);
    READ_BYTE(5);
    READ_BYTE(6);

    return result | (static_cast<uint64_t>(Read(n)) << (7 * kMinBits));
  }

#undef READ_BYTE