std::error_category:: equivalent

From cppreference.com

virtual bool equivalent ( int code, const std:: error_condition & condition ) const noexcept ;	(1)	(since C++11)
virtual bool equivalent ( const std:: error_code & code, int condition ) const noexcept ;	(2)	(since C++11)

Checks whether error code is equivalent to an error condition for the error category represented by * this .

1) Equivalent to default_error_condition ( code ) == condition .

2) Equivalent to * this == code. category ( ) && code. value ( ) == condition .

code	-	specifies the error code to compare
condition	-	specifies the error condition to compare

true if the error code is equivalent to the given error condition for the error category represented by * this , false otherwise.

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Member functions
error_category::error_category
error_category::~error_category
error_category::name
error_category::default_error_condition
error_category::equivalent
error_category::message
error_category::operator== error_category::operator!= error_category::operator< error_category::operator<=> (until C++20) (until C++20) (C++20)