Step 1: Determine the UTF-8 encoding bit layout
The character ⇟ has the Unicode code point U+21DF. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of
0x0800to0xffff.
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 thexare 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+21DF to binary:
00100001 11011111. 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:
11100010 10000111 10011111
DOWNWARDS ARROW WITH DOUBLE STROKE·U+21DF
⇟
Character Information
Code Point
U+21DF
HEX
21DF
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 87 9F | 11100010 10000111 10011111 |
| UTF16 (big Endian) | 21 DF | 00100001 11011111 |
| UTF16 (little Endian) | DF 21 | 11011111 00100001 |
| UTF32 (big Endian) | 00 00 21 DF | 00000000 00000000 00100001 11011111 |
| UTF32 (little Endian) | DF 21 00 00 | 11011111 00100001 00000000 00000000 |
HTML Entity
⇟
URI Encoded
%E2%87%9F
Description
The Unicode character U+21DF, known as the "DOWNWARDS ARROW WITH DOUBLE STROKE," serves a specific role in digital text, primarily within mathematical equations and scientific notations. It represents an arrow pointing downwards with two horizontal strokes across its body, symbolizing the concept of a double-headed arrow, indicating that there are two possible directions or outcomes. This character is often utilized in various programming languages and software applications to represent concepts such as multiplication or division operations, particularly when dealing with complex mathematical expressions or algorithms. Although U+21DF has no direct cultural or linguistic significance, it remains an essential tool for professionals working in fields like mathematics, computer science, engineering, and physics. Its inclusion in the Unicode Standard ensures that this typographic symbol is consistently rendered across different devices, operating systems, and software applications, thereby facilitating accurate communication of technical information among experts worldwide.
How to type the ⇟ symbol on Windows
Hold Alt and type 8671 on the numpad. Or use Character Map.