Step 1: Determine the UTF-8 encoding bit layout
The character ⇡ has the Unicode code point U+21E1. 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+21E1 to binary:
00100001 11100001. 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 10100001
UPWARDS DASHED ARROW·U+21E1
⇡
Character Information
Code Point
U+21E1
HEX
21E1
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 87 A1 | 11100010 10000111 10100001 |
| UTF16 (big Endian) | 21 E1 | 00100001 11100001 |
| UTF16 (little Endian) | E1 21 | 11100001 00100001 |
| UTF32 (big Endian) | 00 00 21 E1 | 00000000 00000000 00100001 11100001 |
| UTF32 (little Endian) | E1 21 00 00 | 11100001 00100001 00000000 00000000 |
HTML Entity
⇡
URI Encoded
%E2%87%A1
Description
The Unicode character U+21E1, known as the UPWARDS DASHED ARROW, is a typographical symbol that plays a significant role in digital text communication. It is used to represent an arrow pointing upwards with a dashed line, which visually signifies an ascending direction or upward movement. This symbol is particularly useful in mathematical equations, scientific notation, and computer programming where the concept of an ascent or increase is needed. In programming languages like C, C++, and Python, this character helps to denote a pointer, indicating a position or reference within a data structure. The UPWARDS DASHED ARROW is also seen in flowcharts and diagrams for its ability to illustrate decision-making processes clearly. Despite the character's technical use, it does not have any specific cultural, linguistic, or contextual significance beyond these applications. Overall, U+21E1 serves as a crucial tool for conveying directional and mathematical concepts in digital text environments.
How to type the ⇡ symbol on Windows
Hold Alt and type 8673 on the numpad. Or use Character Map.