EncodeVarint encodes a uint64 into a varint-encoded byte slice and returns the offset of the encoded value.

SizeOfVarint returns the size of the varint-encoded value.

SizeOfZigzag returns the size of the zigzag-encoded value.

Skip the first record of the byte slice and return the offset of the next record.

ErrIntOverflow is returned when decoding a varint representation of an integer that overflows 64 bits.

ErrInvalidLength is returned when decoding a negative length.

ErrUnexpectedEndOfGroup is returned when decoding a group end without a corresponding group start.