This character is a Math Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it acts as Other Neutral. When changing direction it is mirrored into Approximately Equal To. If its East Asian Width is “narrow”, U+224C forms a word with similar characters, which prevents a line break inside it. Otherwise it allows line breaks around it, except in some numeric contexts.
The CLDR project calls this character “all equal” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: all, equal, equality, mathematics.
The Wikipedia has the following information about this codepoint:
The equals sign (British English) or equal sign (American English), also known as the equality sign, is the mathematical symbol =, which is used to indicate equality in some well-defined sense. In an equation, it is placed between two expressions that have the same value, or for which one studies the conditions under which they have the same value.
In Unicode and ASCII, it has the code point U+003D. It was invented in 1557 by Robert Recorde.
Representations
System
Representation (click value to copy)
Nº
8780
UTF-8
E2 89 8C
UTF-16
22 4C
UTF-32
00 00 22 4C
URL-Quoted
%E2%89%8C
HTML hex reference
≌
Wrong windows-1252 Mojibake
≌
HTML named entity
≌
HTML named entity
≌
Encoding: GB2312 (hex bytes)
A1 D5
Encoding: GBK (hex bytes)
A1 D5
Encoding: GB18030 (hex bytes)
A1 D5
Encoding: HZ (hex bytes)
7E 7B 21 55 7E 7D
Encoding: ISO2022_JP_2 (hex bytes)
1B 24 28 41 21 55 1B 28 42
LATEX
\allequal
Adobe Glyph List
allequal
digraph
=?
RFC 5137
\u'224C'
Bash and Zsh inside echo -e
\u224C
C and C++
\u224C
C#
\u224C
CSS
\00224C
Excel
=UNICHAR(8780)
Go
\u224C
JavaScript
\u224C
Modern JavaScript since ES6
\u{224c}
JSON
\u224C
Java
\u224C
Lua
\u{224C}
Matlab
char(8780)
Perl
"\x{224C}"
PHP
\u{224c}
PostgreSQL
U&'\224C'
PowerShell
`u{224C}
Python
\u224C
Ruby
\u{224c}
Rust
\u{224c}
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