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/C++std::overflow_error
Defined in header <stdexcept> | ||
|---|---|---|
class overflow_error; |
Defines a type of object to be thrown as exception. It can be used to report arithmetic overflow errors (that is, situations where a result of a computation is too large for the destination type).
The only standard library components that throw this exception are std::bitset::to_ulong and std::bitset::to_ullong.
The mathematical functions of the standard library components do not throw this exception (mathematical functions report overflow errors as specified in math_errhandling). Third-party libraries, however, use this. For example, boost.math throws std::overflow_error if boost::math::policies::throw_on_error is enabled (the default setting).
Inheritance diagram.
Member functions
| (constructor) | constructs the exception object (public member function) |
std::overflow_error::overflow_error
explicit overflow_error( const std::string& what_arg ); | (1) | |
explicit overflow_error( const char* what_arg ); | (2) | (since C++11) |
Constructs the exception object with what_arg as explanatory string that can be accessed through what().
Because copying std::exception is not permitted to throw exceptions, this message is typically stored internally as a separately-allocated reference-counted string. This is also why there is no constructor taking std::string&&: it would have to copy the content anyway.
Parameters
| what_arg | - | explanatory string |
Exceptions
May throw std::bad_alloc.
Inherited from std::exception
Member functions
|
[virtual] | destructs the exception object (virtual public member function of std::exception) |
|
[virtual] | returns an explanatory string (virtual public member function of std::exception) |
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