C++ concepts: NumericType

Specifies that the type can be used as the template argument of std::valarray.

Requirements

for a type T to be an NumericType:

• T cannot be a reference
• T cannot be cv-qualified
• If T is a class, it
• does not overload operator&
• has no pure virtual member functions (is not abstract)
• has a public default constructor
• has a public copy constructor T::T(const T&)
• has a public destructor
• has a public assignment operator T& T::operator=(const T&) or T& T::operator=(T)
• default constructor followed by assignment has the same effect as copy constructor
• copy constructor with the value T() has the same effect as value-initialization
• destructor followed by copy constructor has the same effect as assignment
• No operation on T may throw exceptions