Elements Assembly

ll first meta-model – ISA\ll\Elements

Parent

Data

Elements
Aliases	Primitive
Information	This assembly put together the elementary elements shared by the Meta-model and the model. In particular, it is the place where all primitive types are defined. Basically, an Element is neither a classifier nor an object, but it is a Type. One can say that using Metaclasses is like doing Chemistry, and that these Elements are the elementary elements as like atoms are to Physics.

assembly data

Edition
	Version	1
	Country	None.
	Language	None.
	Tirage	1
Dependencies	None.
Inhibit all invariants	False.
scope	Ideas.

Diagram

Classes

Element

Information

An Element is the raw elementary building block in ll. It is the root of all Primitive types introduced in ll for efficiency reasons.
This is why they do not follow the object Orientation paradigm of ISA. However, while not Objects, the Elements are accessible and manipulated in a similar way in ll. This is one of the reason why keywords and operators are not required in LL.
One can say that using Metaclasses is like doing Chemistry, and that these Elements are the elementary elements as like atoms are to Physics.

Element

sbyte

Information

A 64 bits binary word.
sbyte means “Square byte”.This is one of the cornerstones Type because it supports the 64 bits principle of ISA.It also can be considered to be a bit field. In particular for operations dealing directly with hardware devices.

Field

$	The 64 bits word, giving a support to the sbyte value.

Constructor

sbyte(Hexadecimal initializer)	The constructor of sbyte allowing to specify a value thru a hexadecimal string.
Sbyte(Value: Integer)	The constructor of Sbyte allowing to specify a value thru an integer.
Sbyte()	The constructor of Sbyte containing a generated pseudo-random value.

Queries

⊥	Overrides the Type query. True if the Operand is a Sbyte.
=	Overrides the Type query. True if type is compatible and the $ values are equal.

Commands

∧, ⊼, ∨, ⊽, ⊻, ¬	Bits level logical operators: And, Nand, Or, Nor, Or exclusive, Not.
Increment, Decrement	Respectively add and subtract 1 to the Sbyte value.
Two complement negation	Replace the value with its two's complement. That is the operation to subtracts the value from 0.
Rotate	The bits that slide off the end of the value are fed back into the spaces. The rotation can incorporate the carry bit and be done in right of left direction.
Shift	In a logical shift instruction (also referred to as unsigned shift), the bits that slide off the end disappear (except for the last, which goes into the carry flag), and the spaces are always filled with zeros. Logical shifts are best used with unsigned numbers. In an arithmetic shift (also referred to as signed shift), like a logical shift, the bits that slide off the end disappear (except for the last, which goes into the carry flag). But in an arithmetic shift, the spaces are filled in such a way to preserve the sign of the number being slid. For this reason, arithmetic shifts are better suited for signed numbers in two's complement format. The shift can be done in right of left direction.