org.bytedeco.dnnl

Enum memory.data_type

java.lang.Object

java.lang.Enum<memory.data_type>

org.bytedeco.dnnl.memory.data_type

All Implemented Interfaces:

Serializable, Comparable<memory.data_type>

Enclosing class:

memory

public static enum memory.data_type
extends Enum<memory.data_type>

Data type specification.

Enum Constant Summary

Enum Constants

Enum Constant and Description
bf16 non-standard [16-bit floating point with 7-bit mantissa](https://en.wikipedia.org/wiki/Bfloat16_floating-point_format).
e8m0 [MX-compliant 8-bit compliant scale data type](https://www.opencompute.org/documents/ocp-microscaling-formats-mx-v1-0-spec-final-pdf) with 8-bit exponent.
f16 [16-bit/half-precision floating point](https://en.wikipedia.org/wiki/Half-precision_floating-point_format).
f32 [32-bit/single-precision floating point](https://en.wikipedia.org/wiki/Single-precision_floating-point_format).
f4_e2m1 [MX-compliant 4-bit float data type](https://www.opencompute.org/documents/ocp-microscaling-formats-mx-v1-0-spec-final-pdf) with 2-bit exponent and 1 bit mantissa.
f4_e3m0 4-bit float data type with 3-bit exponent and 0 bit mantissa.
f64
f8_e4m3 [OFP8 standard 8-bit floating-point](https://www.opencompute.org/documents/ocp-8-bit-floating-point-specification-ofp8-revision-1-0-2023-06-20-pdf) with a 4-bit exponent and a 3-bit mantissa.
f8_e5m2 [OFP8 standard 8-bit floating-point](https://www.opencompute.org/documents/ocp-8-bit-floating-point-specification-ofp8-revision-1-0-2023-06-20-pdf) with a 5-bit exponent and a 2-bit mantissa.
s32 32-bit signed integer.
s4 4-bit signed integer.
s8 8-bit signed integer.
u4 4-bit unsigned integer.
u8 8-bit unsigned integer.
undef Undefined data type (used for empty memory descriptors).

Field Summary

Fields

Modifier and Type	Field and Description
int	value

Method Summary

Modifier and Type	Method and Description
memory.data_type	intern()
String	toString()
static memory.data_type	valueOf(String name) Returns the enum constant of this type with the specified name.
static memory.data_type[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

undef

public static final memory.data_type undef

Undefined data type (used for empty memory descriptors).

f4_e3m0

public static final memory.data_type f4_e3m0

4-bit float data type with 3-bit exponent and 0 bit mantissa.

f4_e2m1

public static final memory.data_type f4_e2m1

[MX-compliant 4-bit float data type](https://www.opencompute.org/documents/ocp-microscaling-formats-mx-v1-0-spec-final-pdf) with 2-bit exponent and 1 bit mantissa.

e8m0

public static final memory.data_type e8m0

[MX-compliant 8-bit compliant scale data type](https://www.opencompute.org/documents/ocp-microscaling-formats-mx-v1-0-spec-final-pdf) with 8-bit exponent.

f8_e5m2

public static final memory.data_type f8_e5m2

[OFP8 standard 8-bit floating-point](https://www.opencompute.org/documents/ocp-8-bit-floating-point-specification-ofp8-revision-1-0-2023-06-20-pdf) with a 5-bit exponent and a 2-bit mantissa.

f8_e4m3

public static final memory.data_type f8_e4m3

[OFP8 standard 8-bit floating-point](https://www.opencompute.org/documents/ocp-8-bit-floating-point-specification-ofp8-revision-1-0-2023-06-20-pdf) with a 4-bit exponent and a 3-bit mantissa.

f16

public static final memory.data_type f16

[16-bit/half-precision floating point](https://en.wikipedia.org/wiki/Half-precision_floating-point_format).

bf16

public static final memory.data_type bf16

non-standard [16-bit floating point with 7-bit mantissa](https://en.wikipedia.org/wiki/Bfloat16_floating-point_format).

f32

public static final memory.data_type f32

[32-bit/single-precision floating point](https://en.wikipedia.org/wiki/Single-precision_floating-point_format).

f64

public static final memory.data_type f64

s32

public static final memory.data_type s32

32-bit signed integer.

s8

public static final memory.data_type s8

8-bit signed integer.

u8

public static final memory.data_type u8

8-bit unsigned integer.

s4

public static final memory.data_type s4

4-bit signed integer.

u4

public static final memory.data_type u4

4-bit unsigned integer.

Field Detail

value

public final int value

Method Detail

values

public static memory.data_type[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (memory.data_type c : memory.data_type.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static memory.data_type valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

intern

public memory.data_type intern()

toString

public String toString()

Overrides:

toString in class Enum<memory.data_type>