is_floating_point Class
The latest version of this topic can be found at is_floating_point Class.
Tests if type is floating point.
Syntax
template <class Ty>
struct is_floating_point;
Parameters
Ty
The type to query.
Remarks
An instance of the type predicate holds true if the type Ty is a floating point type or a cv-qualified form of a floating point type, otherwise it holds false.
A floating point type is one of float, double, or long double.
Example
// std_tr1__type_traits__is_floating_point.cpp
// compile with: /EHsc
#include <type_traits>
#include <iostream>
struct trivial
{
int val;
};
int main()
{
std::cout << "is_floating_point<trivial> == " << std::boolalpha
<< std::is_floating_point<trivial>::value << std::endl;
std::cout << "is_floating_point<int> == " << std::boolalpha
<< std::is_floating_point<int>::value << std::endl;
std::cout << "is_floating_point<float> == " << std::boolalpha
<< std::is_floating_point<float>::value << std::endl;
return (0);
}
is_floating_point<trivial> == false
is_floating_point<int> == false
is_floating_point<float> == true
Requirements
Header: <type_traits>
Namespace: std