verilator/test_regress/t/t_sys_file_zero.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

// verilog_format: off
`define stop $stop
`define checkd(gotv,expv) do if ((gotv) !== (expv)) begin $write("%%Error: %s:%0d:  got=%0d exp=%0d\n", `__FILE__,`__LINE__, (gotv), (expv)); `stop; end while(0);
// verilog_format: on

module t;
  int i;
  int v;
  string s;
  reg [100*8:1] letterl;

  initial begin
    // Display formatting
    $fwrite(0, "Never printed, file closed\n");
    i = $feof(0);
    if (i == 0) $stop;
    $fflush(0);
    $fclose(0);
    i = $ferror(0, letterl);
    i = $fgetc(0);
    `checkd(i, -1);
    i = $ungetc(0, 0);
    `checkd(i, -1);
    i = $fgets(letterl, 0);
    `checkd(i, 0);
    i = $fscanf(0, "%x", v);
    `checkd(i, -1);
    i = $ftell(0);
    `checkd(i, -1);
    i = $rewind(0);
    `checkd(i, -1);
    i = $fseek(0, 10, 0);
    `checkd(i, -1);

    $write("*-* All Finished *-*\n");
    $finish(0);  // Test arguments to finish
  end

endmodule