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UnsignedMachineInteger—Wolfram Documentation

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"UnsignedMachineInteger"

represents a machine-sized unsigned integer atomic type specifier.

• "UnsignedMachineInteger" can be used in Typed and related constructs to specify a type.
• On 64-bit platforms, "UnsignedMachineInteger" is an "UnsignedInteger64".
• On 32-bit platforms, "UnsignedMachineInteger" is an "UnsignedInteger32".

• Values held by "UnsignedMachineInteger" range from 0 to 2⁶⁴-1 on 64-bit architectures.
• Values held by "UnsignedMachineInteger" range from 0 to 2³²-1 on 32-bit architectures.

From Expressions
• Suitably sized Integer expressions can be converted into compiled code elements with the type "UnsignedMachineInteger".
To Expressions
• "UnsignedMachineInteger" compiled elements can be converted into Integer expressions.
Arithmetic
• "UnsignedMachineInteger" compiled elements are automatically promoted to real or complex elements when they are combined in binary arithmetic operations.
• Compiled elements with types smaller than "UnsignedMachineInteger" are automatically promoted to "UnsignedMachineInteger" when they are combined in binary arithmetic operations.

Overflow
• "UnsignedMachineInteger" can give a runtime error if it is used in an operation that overflows.

"UnsignedMachineInteger" can be used as an input and output from a CompiledCodeFunction:

"UnsignedMachineInteger" has the same size as $SystemWordLength:

An overflow causes an error while running the function. The computation is terminated, a message is issued and the Wolfram Engine is used to compute the result:

The "UnsignedMachineInteger" argument is automatically promoted when combined with a real number:

When an "UnsignedMachineInteger" argument is combined with an integer of a smaller storage size, the smaller type is automatically promoted:

"UnsignedMachineInteger" is useful for working with "PackedArray", since this takes integers of the native size for the architecture:

Introduced in 2019 (12.0)

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