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__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

See also

<type_traits>
is_integral Class