Step 1: Determine the UTF-8 encoding bit layout
The character ↤ has the Unicode code point U+21A4. 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+21A4 to binary:
00100001 10100100. 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 10000110 10100100
LEFTWARDS ARROW FROM BAR·U+21A4
↤
Character Information
Code Point
U+21A4
HEX
21A4
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 86 A4 | 11100010 10000110 10100100 |
| UTF16 (big Endian) | 21 A4 | 00100001 10100100 |
| UTF16 (little Endian) | A4 21 | 10100100 00100001 |
| UTF32 (big Endian) | 00 00 21 A4 | 00000000 00000000 00100001 10100100 |
| UTF32 (little Endian) | A4 21 00 00 | 10100100 00100001 00000000 00000000 |
HTML Entity
↤
URI Encoded
%E2%86%A4
Description
The Unicode character U+21A4, known as the "Leftwards Arrow from Bar", is a mathematical symbol commonly used in digital text to denote the subtraction operation. This operator represents the action of subtracting a value from another number, which is fundamental to arithmetic and various mathematical disciplines. The Leftwards Arrow from Bar is often employed in programming languages, scientific documents, and educational materials to convey subtraction, differentiation, and other operations that involve the reduction or removal of values. Although this character may not be widely recognized outside of technical and mathematical contexts, its precise representation and functionality are crucial for accurate communication and calculation in various fields, from finance to physics, engineering, and computer science.
How to type the ↤ symbol on Windows
Hold Alt and type 8612 on the numpad. Or use Character Map.