function function函数的目的返回一个用于表达式的值。 (the purpose of a function is to return a value that is to be used in an expression) verilog中的function只能用于组合逻辑; 1 定义函数的语法 function <返回值的类型或范围> <函数名> <端口说明语句>
function. This variable either defaults to a 1-bit reg or is the same type as the type specified in the function declaration. The function definition initializes the return value from the function by assigning the function result to the internal variable with the same name as the function. ...
1, res));$display("res = %0d", res);end// Function has an 8-bit return value and accepts two inputs and provides the result through its output port and return valfunctionbit[7:0] sum;inputintx, y;outputsum;
This function returns a file descriptor, which is a unique identifier for the opened file. Understanding the return values of $fopen is crucial for effective file handling in SystemVerilog simulations. When a file is successfully opened, $fopen returns a non-negative integer value representing the...
Returning a value from a function The function definition will implicitly create an internal variable of the same name as that of the function. Hence it is illegal to declare another variable of the same name inside the scope of the function. The return value is initialized by assigning the ...
Evaluate a system task/function argument expression. 置参数值 返回类型调用格式及说明 int◆tf_putp(int narg, int value) ◆tf_iputp(int narg, int value, char *instance_p) Put an integer value to a system task/function argument or function return. ...
Functions can have any number of inputs but only one output (one return value) The order of inputs to a function dictates how it should be wired up when called The return type defaults to one bit unless defined otherwise Functions execute immediately (zero time delay) Functions can call ...
function [15:0] myfunc1 (input [7:0] x,y); myfunc1 = x * y - 1; // return value assigned to function name endfunction function [15:0] myfunc2 (input [7:0] x,y); return x * y - 1; //return value is specified using return statement endfunction ...
9 MAKE_FUNCTION 0 # 创建函数 12 STORE_FAST 1 (bar) 9 15 LOAD_FAST 1 (bar) 18 LOAD_FAST 0 (x) 21 CALL_FUNCTION 1 # 调用函数 24 RETURN_VALUE 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 其中, 第一行为代码行号; ...
4.Learn to use the function to calculate some value in the compiler process B. The syntax for writing SVerilog 1. Lexical Everything iscase sensitive Type instances must start with A-Z, a-z, _. Can contain A-Z, a-z, 0-9, _, $ ...