LEFT RIGHT ARROW WITH VERTICAL STROKE·U+21F9

Character Information

Code Point
U+21F9
HEX
21F9
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 87 B9
11100010 10000111 10111001
UTF16 (big Endian)
21 F9
00100001 11111001
UTF16 (little Endian)
F9 21
11111001 00100001
UTF32 (big Endian)
00 00 21 F9
00000000 00000000 00100001 11111001
UTF32 (little Endian)
F9 21 00 00
11111001 00100001 00000000 00000000
HTML Entity
⇹
URI Encoded
%E2%87%B9

Description

The Unicode character U+21F9, known as the "LEFT RIGHT ARROW WITH VERTICAL STROKE," is a typographical symbol used in digital text to illustrate a two-way arrow with a vertical line running through it. This character plays a significant role in various applications, particularly in computer programming and coding languages, where it denotes a bidirectional operation or a process that has been suspended or stopped. Although the character does not have any specific cultural or linguistic context, it is widely used across different platforms and programming languages due to its universal representation of two-way communication and directionality. The U+21F9 symbol effectively conveys the idea of an exchange or interaction between two entities without the need for additional text or explanation. This makes it a valuable tool in digital communication and information technology, where clarity and conciseness are essential for efficient understanding and problem-solving.

How to type the symbol on Windows

Hold Alt and type 8697 on the numpad. Or use Character Map.

  1. Step 1: Determine the UTF-8 encoding bit layout

    The character has the Unicode code point U+21F9. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of 0x0800 to 0xffff.

    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 the x are the payload bits.

    UTF-8 Encoding bit layout by codepoint range
    Codepoint RangeBytesBit patternPayload length
    U+0000 - U+007F10xxxxxxx7 bits
    U+0080 - U+07FF2110xxxxx 10xxxxxx11 bits
    U+0800 - U+FFFF31110xxxx 10xxxxxx 10xxxxxx16 bits
    U+10000 - U+10FFFF411110xxx 10xxxxxx 10xxxxxx 10xxxxxx21 bits
  2. Step 2: Obtain the payload bits:

    Convert the hexadecimal code point U+21F9 to binary: 00100001 11111001. Those are the payload bits.

  3. 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 10111001