0xD8

0xD8 is a hexadecimal literal commonly used in programming to represent the decimal value 216. The 0x prefix indicates hexadecimal notation in many languages, including C, C++, Java, JavaScript, and Python.

In character encoding, the byte value 0xD8 maps to the Unicode code point U+00D8, which is the Latin Capital Letter O with Stroke, rendered as Ø. In ISO-8859-1 (Latin-1) and Windows-1252, 0xD8 corresponds to Ø. In Unicode, the character is used in Danish, Norwegian, and Faroese alphabets, among others. The symbol Ø is also widely seen in technical notation to denote diameter, though the diameter symbol can appear in different typographic forms.

In UTF-8, the character U+00D8 is encoded as two bytes: 0xC3 0x98. Thus, while 0xD8 represents a single byte value in some encodings, it is not the UTF-8 encoding for Ø. This distinction is important when interpreting raw byte streams versus Unicode text.

Applications and implications: 0xD8 commonly appears in source code as a numeric constant or as a byte value within data encoded in Latin-1 or Windows-1252. Its meaning depends on context, particularly the surrounding encoding and the programming language’s handling of literals and types.

See also: U+00D8, Latin Capital Letter O with Stroke, Ø.