numeric_limits::is_specialized

測試，如果型別已定義的明確特製化樣板類別 numeric_limits。

static const bool is_specialized = false;

傳回值

true ，如果型別具有定義的明確特製化樣板類別， false ，否則為。

備註

除了指標以外的所有純量型別會為樣板類別定義的明確特製化 numeric_limits。

範例

// numeric_limits_is_specialized.cpp
// compile with: /EHsc
#include <iostream>
#include <limits>

using namespace std;

int main( )
{
   cout << "Whether float objects have an explicit "
        << "specialization in the class: "
        << numeric_limits<float>::is_specialized
        << endl;
   cout << "Whether float* objects have an explicit "
        << "specialization in the class: "
        << numeric_limits<float*>::is_specialized
        << endl;
   cout << "Whether int objects have an explicit "
        << "specialization in the class: "
        << numeric_limits<int>::is_specialized
        << endl;
   cout << "Whether int* objects have an explicit "
        << "specialization in the class: "
        << numeric_limits<int*>::is_specialized
        << endl;
}

需求

標題: <limits>

命名空間: std

請參閱

參考

strstreambuf Class