0x8000

0x8000 is a hexadecimal integer literal used in computing. It represents the decimal value 32768. In binary it is 1000000000000000, which corresponds to the most significant bit being set in a 16-bit word.

Significance in data representation: in unsigned 16-bit contexts, 0x8000 denotes 32768. In signed 16-bit two's complement representation, it corresponds to −32768, which is the minimum representable value for that type. Because it sets the high-order bit, 0x8000 is commonly used as a bitmask or flag in bitfields and low-level programming. It can be combined with other patterns using bitwise OR to enable the high bit, or checked with bitwise AND to test whether the high bit is set.

Usage and context: 0x8000 appears in various hardware interfaces, file formats, and legacy software that rely on 16-bit word boundaries. Its role is often to reserve or indicate a special flag, such as a sign flag, a high-priority indicator, or a boundary marker in older systems. In modern software, the exact semantics depend on the specific protocol or data structure in which the value is used.

Unicode reference: in Unicode notation, 0x8000 corresponds to the code point U+8000 in the Basic Multilingual Plane. This code point lies within the CJK Unified Ideographs block, and the visible character depends on font and rendering.

Overall, 0x8000 is primarily recognized for representing the high bit of a 16-bit value, with its meaning varying by context.