What are the expressions in Verilog?
Through out Verilog-A/MS mathematical expressions are used to specify behavior. Expressions are made up of operators and functions that operate on signals, variables and literals (numerical and string constants) and resolve to a value.
What are the different operators used in Verilog?
Operators
| Verilog Operator | Name | Functional Group |
|---|---|---|
| * / % | multiply divide modulus | arithmetic arithmetic arithmetic |
| + – | binary plus binary minus | arithmetic arithmetic |
| << >> | shift left shift right | shift shift |
| > >= < <= | greater than greater than or equal to less than less than or equal to | relational relational relational relational |
What is === operator in Verilog?
Some data types in Verilog, such as reg , are 4-state. This means that each bit can be one of 4 values: 0,1,x,z. With the “case equality” operator, === , x’s are compared, and the result is 1. === tests 4-state logical equality (tests for 1, 0, z and x)
What are the different types of operators used in an expression?
Operators
- Arithmetic Operators are used to perform mathematical calculations.
- Assignment Operators are used to assign a value to a property or variable.
- Comparison Operators are used to perform comparisons.
- Concatenation Operators are used to combine strings.
What is in Verilog syntax?
Verilog provides 4 basic values, a) 0 — logic zero or false condition b) 1 — logic one, or true condition c) x — unknown/undefined logic value. Only for physical data types. d) z — high-impedance/floating state. ‘radix — Binary(b), octal(o), decimal(d), or hexadecimal(h).
What does question mark mean in Verilog?
conditional operator
The question mark is known in Verilog as a conditional operator though in other programming languages it also is referred to as a ternary operator, an inline if, or a ternary if. It is used as a short-hand way to write a conditional expression in Verilog (rather than using if/else statements).
What is modulus operator?
The modulo operator, denoted by %, is an arithmetic operator. The modulo division operator produces the remainder of an integer division. Syntax: If x and y are integers, then the expression: produces the remainder when x is divided by y.
Which is the example of ternary operator in Verilog?
If the first expression is non-zero (true), the second expression is evaluated and given as the result of the ternary expression. Otherwise, the third expression is evaluated and given as the result of the ternary expression. In Verilog HDL, ternary operators are called “conditional operators.”
What are logical operators in Verilog?
Verilog Logical Operators
| Operator | Description |
|---|---|
| a && b | evaluates to true if a and b are true |
| a || b | evaluates to true if a or b are true |
| !a | Converts non-zero value to zero, and vice versa |
What is operators and types of operators?
Types of Operators
- Arithmetic operators.
- Relational operators.
- Logical operators.
- Bitwise operators.
- Assignment operators.
- Type Information Operators(Special operators)
What is the difference between operator and expression?
An operator is a symbol or sign used to specify an operation to be performed. An expression is a set of variables, constants and operators. Operator works on operands. Expression is a combination of operators and operands.
What are 4 values in Verilog?
Verilog provides 4 basic values, a) 0 — logic zero or false condition b) 1 — logic one, or true condition c) x — unknown/undefined logic value. Only for physical data types. d) z — high-impedance/floating state.
When to use a relational operator in Verilog?
Verilog Relational Operators. An expression with the relational operator will result in a 1 if the expression is evaluated to be true, and 0 if it is false. If either of the operands is X or Z, then the result will be X. Relational operators have a lower precedence than arithmetic operators and all relational operators have the same precedence.
Which is the result of the power operator in Verilog?
Let’s look at some of the operators in Verilog that would enable synthesis tools realize appropriate hardware elements. If the second operand of a division or modulus operator is zero, then the result will be X. If either operand of the power operator is real, then the result will also be real.
How are operators used in a Verilog synthesis tool?
Operators in Verilog. An operator, in many ways, is similar to a simple mathematical operator. They receive one or two inputs and generate a single output. Operators enable synthesis tools to choose the desired hardware elements. We can categorize operators based on: Number of Operands.
How are Verilog operators similar to iremember operators?
IVerilog operators operate on several data types to produce an output INot all Verilog operators are synthesible (can produce gates) ISome operators are similar to those in the C language IRemember, you are making gates, not an algorithm (in most cases) Verilog – Operators Arithmetic Operators IThere are two types of operators: binary and unary