LEFTWARDS ARROW WITH DOUBLE VERTICAL STROKE·U+21FA

Character Information

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

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 87 BA
11100010 10000111 10111010
UTF16 (big Endian)
21 FA
00100001 11111010
UTF16 (little Endian)
FA 21
11111010 00100001
UTF32 (big Endian)
00 00 21 FA
00000000 00000000 00100001 11111010
UTF32 (little Endian)
FA 21 00 00
11111010 00100001 00000000 00000000
HTML Entity
⇺
URI Encoded
%E2%87%BA

Description

The Unicode character U+21FA, known as the Leftwards Arrow with Double Vertical Stroke (←╬), is a typographical symbol that serves a specific purpose in digital text. It is primarily used to represent directional movement and flows in various contexts, such as diagrams, algorithms, mathematical expressions, and data visualizations. The double vertical stroke added to the leftward arrow indicates a change or transition from one state to another, emphasizing a significant shift. This symbol has no direct cultural, linguistic, or technical context, but it is an important tool for conveying directional movement and transitions in various fields, such as computer science, physics, and engineering.

How to type the symbol on Windows

Hold Alt and type 8698 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+21FA. 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+21FA to binary: 00100001 11111010. 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 10111010