no match for 'operator=='

[uzmeed]

for the following code I am getting the error

receive_cmd.cpp:12:40: error: no match for 'operator==' in 'tmp_cmd == gold_rom[tmp_cmd.cmd::cmd_id]'

void tb::receive_cmds(){
 cmd tmp_cmd;
 cmd gold_rom[128];
 wait(1, SC_NS);
 cmd_error = false;
 while(true){
 tmp_cmd = tb_cmd_in->read();
 if (tmp_cmd == gold_rom[tmp_cmd.cmd_id]) {
 cout << sc_time_stamp() << " " << name();
 cout << ": received correct result for: " << tmp_cmd << endl;
 }
 else {
 cmd_error++;
 cout << sc_time_stamp() << " " << name();
 cout << ": ERROR command = "<< tmp_cmd
 << ", should be: "
 << gold_rom[tmp_cmd.cmd_id];
 }
 num_cmds --;
 cmd_received.notify();
 }
}

please help to resolve

[stahta01]

You failed to have 'operator==' for class "cmd".

Tim S.

[uzmeed]

Thanks Tim

I know that I failed to have operator for class cmd

and worked out that a code similar to

bool operator == (const X... &p1, const y...&p2)
	{
	   if( / * evaluate their equality */)
	     return true;
	   else
	     return false;
	}

is to be used

being newbie to C I m unable use it

can u please guide how can I do it

my cmd.h is

#ifndef _CMD_H
#define _CMD_H




enum cmd_t{ADD,SUB};


class cmd{


public:




	cmd_t command;


	int op_1;
	int op_2;


	int cmd_id;


	cmd(): command(ADD),op_1(0),op_2(0),cmd_id(0) {}


	cmd (cmd_t c, int d0, int d1, int id):


	command(c),op_1(d0),op_2(d1),cmd_id(id){}






};


std::ostream& operator<<(std::ostream& os, cmd& c);


#endif

[stahta01]

First you are writing C++ not C code!

I will let someone else try to help you; you are a person who looks to need an expert to help.

Tim S.

[OldGuy2]

One way to do is:

class cmd 
{
public:
  cmd_t command;
  int op_1;
  int op_2;
  int cmd_id;

  cmd() : command(ADD), op_1(0), op_2(0), cmd_id(0) {}
  cmd(cmd_t c, int d0, int d1, int id) :
  command(c), op_1(d0), op_2(d1), cmd_id(id) {}

  bool operator==(const cmd& other);
};

bool cmd::operator==(const cmd& other)
{
  return op_1 == other.op_1;
  // TO DO check all conditions
}

BTW I think you really should get a good book about C++.