get_reg_value

get register value
     name - the register name
the debugger should be running. otherwise the function fails
the register name should be valid.
It is not necessary to use this function to get register values
because a register name in the script will do too.
returns: register value (integer or floating point)
Thread-safe function (may be called only from the main thread and debthread)

number get_reg_value(string name);