DML_TENSOR_DATA_TYPE enumeration (directml.h)

Specifies the data type of the values in a tensor. DirectML operators may not support all data types; see the documentation for each specific operator to find which data types it supports.

Syntax

typedef enum DML_TENSOR_DATA_TYPE {
  DML_TENSOR_DATA_TYPE_UNKNOWN,
  DML_TENSOR_DATA_TYPE_FLOAT32,
  DML_TENSOR_DATA_TYPE_FLOAT16,
  DML_TENSOR_DATA_TYPE_UINT32,
  DML_TENSOR_DATA_TYPE_UINT16,
  DML_TENSOR_DATA_TYPE_UINT8,
  DML_TENSOR_DATA_TYPE_INT32,
  DML_TENSOR_DATA_TYPE_INT16,
  DML_TENSOR_DATA_TYPE_INT8,
  DML_TENSOR_DATA_TYPE_FLOAT64,
  DML_TENSOR_DATA_TYPE_UINT64,
  DML_TENSOR_DATA_TYPE_INT64
} ;

Constants

DML_TENSOR_DATA_TYPE_UNKNOWN Indicates an unknown data type. This value is never valid.
DML_TENSOR_DATA_TYPE_FLOAT32 Indicates a 32-bit floating-point data type.
DML_TENSOR_DATA_TYPE_FLOAT16 Indicates a 16-bit floating-point data type.
DML_TENSOR_DATA_TYPE_UINT32 Indicates a 32-bit unsigned integer data type.
DML_TENSOR_DATA_TYPE_UINT16 Indicates a 16-bit unsigned integer data type.
DML_TENSOR_DATA_TYPE_UINT8 Indicates an 8-bit unsigned integer data type.
DML_TENSOR_DATA_TYPE_INT32 Indicates a 32-bit signed integer data type.
DML_TENSOR_DATA_TYPE_INT16 Indicates a 16-bit signed integer data type.
DML_TENSOR_DATA_TYPE_INT8 Indicates an 8-bit signed integer data type.

Remarks

DML_FEATURE_LEVEL_6_3

DirectML feature level 6_3 introduces the following data types.

DML_TENSOR_DATA_TYPE_UINT4

Indicates a 4-bit unsigned integer data type. The UINT4 data type puts the first element in the low nibble of the byte; and the second element in the high nibble (standard little-endian order). Dimensions don't need to be byte-aligned (odd sizes are fine). For example, if you have the UINT4 element data [1,2,3,4,5], then that yields 3 bytes [0x21, 0x43, 0x05] with an ignorable tail nibble.

DML_TENSOR_DATA_TYPE_INT4

Indicates a 4-bit signed integer data type.

Requirements

Requirement	Value
Header	directml.h