# "UnsignedInteger64"(Compiled Type)

"UnsignedInteger64"

represents an unsigned 64-bit machine integer atomic type specifier.

# Details

• "UnsignedInteger64" can be used in Typed and related constructs to specify a type.

# Properties

• Values held by "UnsignedInteger64" range from 0 to 264-1.

# Conversions

### From Expressions

• Suitably sized Integer expressions can be converted into compiled code elements with the type "UnsignedInteger64".
• ### To Expressions

• "UnsignedInteger64" compiled elements can be converted into Integer expressions.
• ### Arithmetic

• "UnsignedInteger64" compiled elements are automatically promoted to real or complex elements when they are combined in binary arithmetic operations.
• Compiled elements with types smaller than "UnsignedInteger64" are automatically promoted to "UnsignedInteger64" when they are combined in binary arithmetic operations.
• "Integer64" compiled elements are automatically promoted to "UnsignedInteger64" elements when they are combined in binary arithmetic operations.

# Runtime Errors

### Overflow

• "UnsignedInteger64" can give a runtime error if it is used in an operation that overflows.

# Examples

## Basic Examples(3)

"UnsignedInteger64" can be used as an input and output from a CompiledCodeFunction:

 In:= Out= In:= Out= 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:

 In:=  Out= The "UnsignedInteger64" argument is automatically promoted when combined with a real number:

 In:= Out= When an "UnsignedInteger64" argument is combined with an integer of a smaller storage size, the smaller type is automatically promoted:

 In:= Out= The signed integer of the same storage size is automatically promoted when combined with an "UnsignedInteger64":

 In:= Out= 