is_integral

Applicability

Product	Supported
Atlas 350 Accelerator Card	√
Atlas A3 training product/Atlas A3 inference product	√
Atlas A2 training product/Atlas A2 inference product	√
Atlas 200I/500 A2 inference product	x
Atlas inference product AI Core	x
Atlas inference product Vector Core	x
Atlas training product	x

Function Usage

Checks whether a type is the integer type during program compilation. This API can be used for type checking and conditional processing during compilation.

Prototype

template <typename T>
struct is_integral;

Parameters

**Table 1** Template parameters
Parameter	Description
T	Types to be checked, including basic data types and modifier types

Restrictions

None

Returns

The static constant member value of is_integral is used to obtain the returned Boolean value. The values of is_integral<T>::value are as follows:

true: Tp is of the array type.
false: Tp is not of the array type.

Examples

// Custom test type
struct MyStruct{};
using FuncType = int(int);

// legal integer type
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<bool>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<char>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<int>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<long long>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<unsigned int>::value);

// Integer type limited by CV
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<const int>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<volatile long>::value);

// non-integer type
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<float>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<double>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<int*>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<int&>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<int[5]>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<FuncType>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<MyStruct>::value);
AscendC::printf("AscendC::Std::is_integral::value:%d\n", AscendC::Std::is_integral<void>::value);

// Execution result
AscendC::Std::is_integral::value:1
AscendC::Std::is_integral::value:1
AscendC::Std::is_integral::value:1
AscendC::Std::is_integral::value:1
AscendC::Std::is_integral::value:1
AscendC::Std::is_integral::value:1
AscendC::Std::is_integral::value:1
AscendC::Std::is_integral::value:0
AscendC::Std::is_integral::value:0
AscendC::Std::is_integral::value:0
AscendC::Std::is_integral::value:0
AscendC::Std::is_integral::value:0
AscendC::Std::is_integral::value:0
AscendC::Std::is_integral::value:0
AscendC::Std::is_integral::value:0

Parent topic: Type Traits