External Data Representation (XDR) is a standard data serialization format, for uses such as computer network protocols. It allows data to be transferred between different kinds of computer systems. Converting from the local representation to XDR is called encoding. Converting from XDR to the local representation is called decoding. XDR is implemented as a software library of functions which is portable between different operating systems and is also independent of the transport layer.
XDR uses a base unit of 4 bytes, serialized in big-endian order; smaller data types still occupy four bytes each after encoding. Variable-length types such as string and opaque are padded to a total divisible by four bytes. Floating-point numbers are represented in IEEE 754 format.
Read more about External Data Representation: History, XDR Data Types
Famous quotes containing the words external and/or data:
“It is not a certain conformity of manners that the painting of Van Gogh attacks, but rather the conformity of institutions themselves. And even external nature, with her climates, her tides, and her equinoctial storms, cannot, after van Gogh’s stay upon earth, maintain the same gravitation.”
—Antonin Artaud (1896–1948)
“Mental health data from the 1950’s on middle-aged women showed them to be a particularly distressed group, vulnerable to depression and feelings of uselessness. This isn’t surprising. If society tells you that your main role is to be attractive to men and you are getting crow’s feet, and to be a mother to children and yours are leaving home, no wonder you are distressed.”
—Grace Baruch (20th century)