This character is a Puntuación matemática and is commonly used, that is, in no specific script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+2258 forms with similar adjacent characters prevents a line break inside it.
El Wikipedia tiene la siguiente información acerca de este punto de código:
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.
Representaciones
Sistema
Representación (click value to copy)
N.º
8792
UTF-8
E2 89 98
UTF-16
22 58
UTF-32
00 00 22 58
URL-Quoted
%E2%89%98
HTML hex reference
≘
Mojibake mal de windows-1252
≘
Codificación: GB18030 (hexadecimales bytes)
81 36 D7 39
RFC 5137
\u'2258'
Bash and Zsh inside echo -e
\u2258
C and C++
\u2258
C#
\u2258
CSS
\002258
Excel
=UNICHAR(8792)
Go
\u2258
JavaScript
\u2258
Modern JavaScript since ES6
\u{2258}
JSON
\u2258
Java
\u2258
Lua
\u{2258}
Matlab
char(8792)
Perl
"\x{2258}"
PHP
\u{2258}
PostgreSQL
U&'\2258'
PowerShell
`u{2258}
Python
\u2258
Ruby
\u{2258}
Rust
\u{2258}
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