Difference between Pure function and Cordinary function

SystemVerilog
1

Hi all,
It would be helpful if anybody can tell me the difference between Pure Function and Cordinary function?

2

In reply to Amit Kumar Panda:

I’m not sure what a ‘cordinary function’ is that term doesn’t exist in the SV standard.
However, Section 35.5.1.3 contains this:

A function whose result depends solely on the values of its input arguments and with no side effects can be
specified as pure.

3

In reply to Amit Kumar Panda:
Did you mean Ordinary and not pure?

A pure function is any function whose return value can be determined solely by its input arguments. A pure function has no internal states variables and no references to any external variables other than those passed in as inputs. A pure function does not have modify any of its arguments (side-effects) and its return value is the only result of executing the function.

SystemVerilog requires functions to be pure when used in certain constructs like constant expressions, constraints and assertions.

4

In reply to alexgran:

Thank you alex. Actually I also had doubts about ‘cordinary function’ but I wanted to be sure since I got this question online. Thanks again

5

In reply to dave_59:

Thank you Dave . I got this question online and I wasn’t sure if there is something called ‘cordinary function’ in system verilog. Thanks for the clarification on pure function.