verilator/test_regress/t/t_func_recurse2.v

// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain.
// SPDX-FileCopyrightText: 2003 Wilson Snyder
// SPDX-License-Identifier: CC0-1.0

module t;

  function automatic int recurse_1;
    input int i;
    if (i == 0) recurse_1 = 0;
    else recurse_1 = i + recurse_2(i);
  endfunction

  function automatic int recurse_2;
    input int i;
    return recurse_1(i - 1) * 2;
  endfunction

  initial begin
    if (recurse_1(0) != 0) $stop;
    if (recurse_1(3) != (3 + 2 * (2 + 2 * (1)))) $stop;
    $write("*-* All Finished *-*\n");
    $finish;
  end

endmodule