// This contract is part of Zellic’s smart contract dataset, which is a collection of publicly available contract code gathered as of March 2023.

pragma solidity ^0.4.8;
 
/**
* Math operations with safety checks
*/
contract SafeMath {
 function safeMul(uint256 a, uint256 b) internal returns (uint256) {
   uint256 c = a * b;
   assert(a == 0 || c / a == b);
   return c;
 }
 
 function safeDiv(uint256 a, uint256 b) internal returns (uint256) {
   assert(b > 0);
   uint256 c = a / b;
   assert(a == b * c + a % b);
   return c;
 }
 
 function safeSub(uint256 a, uint256 b) internal returns (uint256) {
   assert(b <= a);
   return a - b;
 }
 
 function safeAdd(uint256 a, uint256 b) internal returns (uint256) {
   uint256 c = a + b;
   assert(c>=a && c>=b);
   return c;
 }
 
 function assert(bool assertion) internal {
   if (!assertion) {
     throw;
   }
 }
}
contract APGLA is SafeMath{
   string public name;
   string public symbol;
   uint8 public decimals;
   uint256 public totalSupply;
   address public owner;
 
   /* This creates an array with all balances */
   mapping (address => uint256) public balanceOf;
   mapping (address => mapping (address => uint256)) public allowance;
 
   /* This generates a public event on the blockchain that will notify clients */
   event Transfer(address indexed from, address indexed to, uint256 value);
 
   /* This notifies clients about the amount burnt */
   event Burn(address indexed from, uint256 value);
 
   /* This notifies clients about the amount minter */
   event Mint(address indexed from, uint256 value);
 
   /* Initializes contract with initial supply tokens to the creator of the contract */
   function APGLA (
       uint256 initialSupply,
       string tokenName,
       uint8 decimalUnits,
       string tokenSymbol
       ) {
       balanceOf[msg.sender] = initialSupply;              // Give the creator all initial tokens
       totalSupply = initialSupply;                        // Update total supply
       name = tokenName;                                   // Set the name for display purposes
       symbol = tokenSymbol;                               // Set the symbol for display purposes
       decimals = decimalUnits;                            // Amount of decimals for display purposes
       owner = msg.sender;                        
   }
 
   modifier onlyOwner() {
   if (msg.sender != owner) throw;
   _;
 }
 
   /* Send coins */
   function transfer(address _to, uint256 _value) {
       if (_to == 0x0) throw;                               // Prevent transfer to 0x0 address. Use burn() instead
   if (_value <= 0) throw;
       if (balanceOf[msg.sender] < _value) throw;           // Check if the sender has enough
       if (balanceOf[_to] + _value < balanceOf[_to]) throw; // Check for overflows
       balanceOf[msg.sender] = SafeMath.safeSub(balanceOf[msg.sender], _value);                     // Subtract from the sender
       balanceOf[_to] = SafeMath.safeAdd(balanceOf[_to], _value);                            // Add the same to the recipient
       Transfer(msg.sender, _to, _value);                   // Notify anyone listening that this transfer took place
   }
 
   /* Allow another contract to spend some tokens in your behalf */
   function approve(address _spender, uint256 _value)
       returns (bool success) {
   if (_value <= 0) throw;
       allowance[msg.sender][_spender] = _value;
       return true;
   }
     
 
   /* A contract attempts to get the coins */
   function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
       if (_to == 0x0) throw;                                // Prevent transfer to 0x0 address. Use burn() instead
   if (_value <= 0) throw;
       if (balanceOf[_from] < _value) throw;                 // Check if the sender has enough
       if (balanceOf[_to] + _value < balanceOf[_to]) throw;  // Check for overflows
       if (_value > allowance[_from][msg.sender]) throw;     // Check allowance
       balanceOf[_from] = SafeMath.safeSub(balanceOf[_from], _value);                           // Subtract from the sender
       balanceOf[_to] = SafeMath.safeAdd(balanceOf[_to], _value);                             // Add the same to the recipient
       allowance[_from][msg.sender] = SafeMath.safeSub(allowance[_from][msg.sender], _value);
       Transfer(_from, _to, _value);
       return true;
   }
 
   function burn(uint256 _value) onlyOwner returns (bool success) {
       if (balanceOf[msg.sender] < _value) throw;            // Check if the sender has enough
   if (_value <= 0) throw;
       balanceOf[msg.sender] = SafeMath.safeSub(balanceOf[msg.sender], _value);                      // Subtract from the sender
       totalSupply = SafeMath.safeSub(totalSupply,_value);                                // Updates totalSupply
       Burn(msg.sender, _value);
       return true;
   }
 
   function mint(uint256 _value) onlyOwner returns (bool success) {
   if (_value <= 0) throw;
       balanceOf[msg.sender] = SafeMath.safeAdd(balanceOf[msg.sender], _value);                      // add to the sender
       totalSupply = SafeMath.safeAdd(totalSupply,_value);                                // Updates totalSupply
       Mint(msg.sender, _value);
       return true;
   }
}