Step 1: Determine the UTF-8 encoding bit layout
The character has the Unicode code point U+31EF. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of
0x0800
to0xffff
.
Therefore we know that the UTF-8 encoding will be done over 16 bits within the final 24 bits and that it will have the format:1110xxxx 10xxxxxx 10xxxxxx
Where thex
are the payload bits.UTF-8 Encoding bit layout by codepoint range Codepoint Range Bytes Bit pattern Payload length U+0000 - U+007F 1 0xxxxxxx 7 bits U+0080 - U+07FF 2 110xxxxx 10xxxxxx 11 bits U+0800 - U+FFFF 3 1110xxxx 10xxxxxx 10xxxxxx 16 bits U+10000 - U+10FFFF 4 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx 21 bits Step 2: Obtain the payload bits:
Convert the hexadecimal code point U+31EF to binary:
00110001 11101111
. Those are the payload bits.Step 3: Fill in the bits to match the bit pattern:
Obtain the final bytes by arranging the paylod bits to match the bit layout:
11100011 10000111 10101111
IDEOGRAPHIC DESCRIPTION CHARACTER SUBTRACTION·U+31EF
Character Information
Character Representations
Click elements to copyEncoding | Hex | Binary |
---|---|---|
UTF8 | E3 87 AF | 11100011 10000111 10101111 |
UTF16 (big Endian) | 31 EF | 00110001 11101111 |
UTF16 (little Endian) | EF 31 | 11101111 00110001 |
UTF32 (big Endian) | 00 00 31 EF | 00000000 00000000 00110001 11101111 |
UTF32 (little Endian) | EF 31 00 00 | 11101111 00110001 00000000 00000000 |
Description
U+31EF is a unique Unicode character known as "IDEOGRAPHIC DESCRIPTION CHARACTER SUBTRACTION." In digital text, this symbol often serves as an indicator to subtract the value of one ideographic description from another in certain mathematical calculations. It holds significant cultural, linguistic, and technical importance in East Asian typography, particularly in Chinese, Japanese, and Korean languages, where it is frequently used in contexts requiring the representation of subtraction operations in written form. As an essential tool for accurate communication in these linguistic spheres, U+31EF plays a vital role in digital text processing systems, ensuring that complex mathematical expressions are correctly interpreted by software applications.
How to type the symbol on Windows
Hold Alt and type 12783 on the numpad. Or use Character Map.