Encode bare interval X in interchange format.
The result is a raw bit pattern of length 128 that derive from two binary64 numbers. Bits are in increasing order. Byte order depends on the system’s endianness. First 8 bytes come from the lower interval boundary, last 8 bytes come from the upper interval boundary.
The result is a row vector if X is a row vector; otherwise, it is a column vector.
For all scalar intervals the following equation holds:
X == interval_bitpack (bitunpack (X)).
See also: interval_bitpack.
Package: interval