is_layout

Applicability

Product	Supported
Atlas 350 Accelerator Card	x
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

Determines whether an input data structure is of the Layout type by checking the value of its member constant value. If value is true, the input data structure is of the Layout type; otherwise, it is not.

Prototype

template <typename T> struct is_layout

Parameters

**Table 1** Template parameters
Parameter	Description
T	Whether the input data structure is of the Layout type based on the input data type.

Returns

None

Restrictions

None

Examples

// Initialize the Layout data structure and determine its type.
AscendC::Shape<int,int,int> shape = AscendC::MakeShape(10, 20, 30);
AscendC::Stride<int,int,int> stride = AscendC::MakeStride(1, 100, 200);

auto layoutMake = AscendC::MakeLayout(shape, stride);
AscendC::Layout<AscendC::Shape<int, int, int>, AscendC::Stride<int, int, int>> layoutInit(shape, stride);

bool value = AscendC::is_layout<decltype(shape)>::value; //value = false
value = AscendC::is_layout<decltype(stride)>::value; //value = false

value = AscendC::is_layout<decltype(layoutMake)>::value;//value = true
value = AscendC::is_layout<decltype(layoutInit)>::value;//value = true

Parent topic: Layout