Language features

HardwareC supports a single-in, single-out control flow. This implies that no gotos, breaks from loops, and returns from procedures (other than at the very end) are allowed. It supports the usual iterative and branching control-flow constructs. Iteration can be specified eitha as fixed-bound loops (for loop) or data-dependent loops (while or repeat-until loops), depending on whether the loop exit condition is known at compile time. 

We summarizes in the following sections major language features in Hard-wareC, with an emphasis on describing constructs that are useful for the specification of ASIC designs. 

Given a particular mapping of integer values to integer parameters of a template model, a corresponding instance of the model is obtained. An analogy 

A procedure or function model may be called by another model. The call indicates a request to execute the functionality defined by the called model, which is implemented by a particular instance of the hardware block corresponding to the invoked model. Therefcxe, from the standpoint of synthesis, a hardware resource is a model that can be shared in the hardware implementation. Resource sharing in high-level synthesis can be constrained by explicitly binding a call to a specific instance of the implementation. 

There are two types of model calls hardware-unbound and hardware-bound calls. A hardware-unbound call is a call where the particular instance of the called model used to implement the call is not specified. The synthesis system has the freedom to implement multiple hardware-unbound calls with one or more hardware resources. In some cases, however, the designer may wish to invoke a specific instance of the called model in the final implementation. This can be achieved by explicitly declaring an instance of the called model, similar to variable declarations. This hardware-bound call then invokes the declared instance of the model by binding the call in the resulting hardware. 

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Leverages latest generation computer language features to simplify the above. 

As the acceptance of structured programming grew, the reputation of BASIC declined. This was a fair assessment of most microcomputer versions of BASIC. Many of them added abbreviated constructs, such as the single-line IF-THEN and IF-THEN-ELSE discussed earlier, but these additions were often made with little thought as to how they would fit with other language features, such as multiple statements on a line. 

Classes are the major new feature that C++ adds to C. They are the C++ language feature that facilitates object-oriented programming. The key idea of object-oriented programming is that the fundamental components of programs should be a objects—a data structure that combines data (information storage) and procedures. Software objects are analogous to the raw parts that are used in other creative disciplines. They make it possible to build more complex entities than would otherwise be possible, they may be modified and specialized as necessary, and they allow the programmer to build software whose structure parallels the structure of the problem domain. 

For human specification of the input to high-level synthesis, the important language features are conciseness and portability. Standard languages, such as Vhdl, are well suited for this purpose. 

Abbasi, A., Chen, H. and Salem, A. (2008) Sentiment analysis in multiple languages Feature selection for opinion classification in web fomms, ACM Transactions Infor Syst, 26 (3), 1-34. DOI 10.1145/1361684.1361685. 

Understanding the principles that run across process expressions and appreciating which language features and computing platforms are best suited for which type of process, bring these process expressions to useM life. No matter how complex and polished the individual process operations (software services) are, it is often the quality of the distributed operating system that determines the power of the concurrent engineering environments. 

The design of an expert system for use in solid/liquid separation involves considerations such as generality and completeness of both the available data and the ultimate software, programming language features and database structures and the control mechanisms that shape and restrict the... 

The Ada 9X Ann does not introduce lots of new language features, since the key issue is assurance ratho than functionality. The major parts of the Annex are as follows ... 

Validation of values. This is a simple language feature which allows the user to enquire if the bit-patton for an object is a l al value. For instance, if a recmd is read from a file writtoi by a COBOL program, it is impmtant thiu the... 

Most automated tools require translation to an intermediate language before they can analyse the code. Automatic translators are available for some languages, but for others one must either translate manually or write a new translator. Some language features do not have an equivalent in the intermediate language even with the automatic translators they must be manually translated. The static analysis of the software depends on its translation model and the more skilled the analyst, the more skilled the model produced. The validation of the intermediate language model needs to be considered, as this can be a major problem. 

The eode in this example illustrates several language features such as die do. end loop, the if... then. .. end loop and a function definition. The code also illustrate some features of the lexical scope of Lua variables wifli the printO statement on line 18. It is noted that variables x, y and z are first introduced within the body of the tst() function definition. However, y is declared as a local variable and is thus known only within the scope of the code block in which it is defined, which in this case is within lines 6 through 13 of the code. The attempt to print the value of y on line 18 thus results in the printed value of nil indicating an unknown value. This illustrates the fact that in Lua, variables are known globally unless restricted to a code block by the local keyword, i.e. die default is that all variables have global scope. 

In addition to the basic Lua language features, Lua provides several sets of standard libraries. Every Lua library is defined by an associative Lua table with the names of the functions as an index string into the table and the function is the value stored at the given index. The standard Lua libraries are grouped as follows ... 

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