# VHDL135: All declared parameters should be used in the corresponding function/procedure ## Summary ```{raw} html

Reliability	Security	Maintainability	Code attribute	Effort to fix	Tags

-	-	MEDIUM	Intentionality \| Clear	20min	synthesis, do254-cp14, do254, vscode, linter, simulation, cnes, cnes-std-03100

``` ## Description ```{raw} html

All declared parameters should be used in the corresponding function/procedure. Useless parameters should be removed.

function f(
  arg1 : std_logic,
  arg2 : std_logic -- Noncompliant: "arg2" is not used
) return std_logic is
begin
  return arg1;
end;

function f(
  arg1 : std_logic,
  arg2 : std_logic
) return std_logic is
begin
  return arg1 or arg2;
end;

``` ## Parameters No parameters. ```{raw} html ```