# std::experimental::is_abi_tag

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< cpp‎ | experimental‎ | simd

Defined in header `<experimental/simd>` |  |
template< class T > struct is_abi_tag; |  | (parallelism TS v2)

If `T` is an ABI tag in the `simd_abi` namespace, provides the member constant `value` equal true. For any other type, `value` is false.

### Template parameters

T | - | a type to check

### Helper variable template

template< class T > inline constexpr bool is_abi_tag_v = is_abi_tag<T>::value; |  | (parallelism TS v2)

## Inherited from std::integral_constant

### Member constants

value [static] | true if `T` is an ABI tag type, false otherwise (public static member constant)

### Member functions

operator bool | converts the object to bool, returns value (public member function)
operator() (C++14) | returns value (public member function)

### Member types

Type | Definition
`value_type` | bool
`type` | std::integral_constant<bool, value>

### Example

Run this code

    #include <experimental/simd>
    #include <iostream>

    int main()
    {
        namespace stdx = std::experimental;
        std::cout << std::boolalpha
                  << stdx::is_abi_tag_v<stdx::simd_abi::scalar> << '\n'
                  << stdx::is_abi_tag_v<int> << '\n';
    }

Output:

    true
    false

### See also

is_simd_flag_type (parallelism TS v2) | checks if a type is a simd flag type (class template)

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