0x000021D9

0x000021D9 is a hexadecimal integer literal commonly encountered in computing. When interpreted as an unsigned value, it equals 8665 in decimal. The leading zeros do not change its value, and in different word widths the same literal can appear as 0x000021D9 (32-bit) or 0x21D9 (16-bit).

In programming and digital systems, values written with a 0x prefix indicate hexadecimal notation. Such literals are used to express constants, memory addresses, bit masks, or other fixed-width data. The exact meaning of 0x000021D9 depends on the context, including the data type, endianness, and the surrounding code or hardware specification.

Binary representation for reference: in a 32-bit layout, 0x000021D9 corresponds to 0000 0000 0000 0000 0010 0001 1101 1001. In a 16-bit context, it would be 0010 0001 1101 1001. This illustrates how the same value can occupy different widths in memory or data formats.

Common contexts where such hex literals appear include memory addresses in low-level programming, offsets within binary files, register values in hardware interfacing, and constant definitions in source code. Understanding the meaning of 0x000021D9 requires knowledge of the specific system or document it appears in.

See also: hexadecimal notation, memory address, bitwise operations, and fixed-width integers.