VHDL170: Functions should only contain one single “return” statement

Summary

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Reliability	Security	Maintainability	Code attribute	Effort to fix	Tags
-	-	LOW	Intentionality | Clear	2min	synthesis, vscode, linter, simulation

Description

Functions should only contain one single return statement.

Noncompliant code example

function my_function(z : boolean) return std_logic is
begin
  if z then
    return '1'; 
  else
    return '0';
  end if;
end;

Compliant Code Example

function my_function(z : boolean) return std_logic is
  variable tmp : std_logic;
begin
  if z then
    tmp := '1';
  else
    tmp := '0';
  end if;
  return tmp;  -- Compliant
end;

Parameters

No parameters.