0x000x7F

0x000x7F is not a standard numeric literal in common programming languages. It visually resembles a hexadecimal constant but contains two 0x prefixes with an extra x between the segments, which typically indicates a typographical error, a data corruption issue, or a misformatted token rather than a valid value. In many languages this would generate a syntax or tokenizer error.

Possible interpretations include treating it as two separate literals, 0x000 and 0x7F, if read with an operator or separator inserted by context; or as a string containing the characters “0x000x7F” rather than a numeric value. In the context of a hex dump or binary data, a sequence resembling this string could be interpreted as a pair of bytes such as 0x00 and 0x7F, depending on endianness and formatting. In ASCII, 0x00 represents the NUL control character and 0x7F represents the DEL control character; together they may appear in data streams or protocol definitions as control sequences.

Parsing considerations: most programming languages will reject 0x000x7F as malformed. If encountered in logs, source code, or data exports, it should be treated as a likely error to be corrected to a proper hex literal (for example, 0x0 and 0x7F) or as a string value, depending on the intended use.

See also: hexadecimal notation, ASCII control characters, data encoding, parsing and tokenization.