Step 1: Determine the UTF-8 encoding bit layout
The character ⇎ has the Unicode code point U+21CE. 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+21CE to binary:
00100001 11001110. 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 10001110
LEFT RIGHT DOUBLE ARROW WITH STROKE·U+21CE
⇎
Character Information
Code Point
U+21CE
HEX
21CE
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 87 8E | 11100010 10000111 10001110 |
| UTF16 (big Endian) | 21 CE | 00100001 11001110 |
| UTF16 (little Endian) | CE 21 | 11001110 00100001 |
| UTF32 (big Endian) | 00 00 21 CE | 00000000 00000000 00100001 11001110 |
| UTF32 (little Endian) | CE 21 00 00 | 11001110 00100001 00000000 00000000 |
HTML Entity
⇎
URI Encoded
%E2%87%8E
Description
The Unicode character U+21CE, known as the Left Right Double Arrow with Stroke (←⇌→), is a lesser-known symbol that plays an essential role in digital text and communication. This unique typographic element combines elements of both the double left-pointing arrow (←) and the double right-pointing arrow (→) to create a single, cohesive symbol. In its typical usage, U+21CE is used in various fields such as mathematics, computer science, and engineering to denote a reversible process or transformation that can occur in either direction, depending on the context. In linguistics and cultural contexts, this character might be less prevalent, but it serves as an important tool for accurately representing certain ideas and concepts that require a sense of bidirectionality or reversibility. Given its specialized nature, U+21CE may not be as widely recognized as other Unicode characters, but it remains a valuable tool in the digital text arsenal for those working in specific technical and mathematical domains.
How to type the ⇎ symbol on Windows
Hold Alt and type 8654 on the numpad. Or use Character Map.