Yearn Finance Protocol

0x96d62cdcd1cc49cb6ee99c867cb8812bea86b9fa Copy

ERC20

This contract is an ERC20 token.

Name Yearn Finance Protocol

Symbol YFP

Decimals 18

Total Supply 390,924 YFP

About

Yearn Finance Protocol (YFP) is a cryptocurrency and operates on the Ethereum platform. Yearn Finance Protocol has a current supply of 440,748 with 0 in circulation. The last known price of Yearn Finance Protocol is 0.29079418 USD and is up 0.38 over the last 24 hours. It is currently trading on 1 active market(s) with $0.00 traded over the last 24 hours. More information can be found at https://www.yfprotocol.finance/.

Stats

Public Functions 10

Event Types 2

Code Size 3,721 bytes

Events (2)

Approval Event

Parameters

tokenOwner	address
spender	address
tokens	uint

Transfer Event

Parameters

from	address
to	address
tokens	uint

State Variables (6)

name Variable

string

symbol Variable

string

decimals Variable

uint8

_totalSupply Variable

uint256

balances Variable

mapping(address => uint)

Internal Variable

allowed Variable

mapping(address => mapping(address => uint))

Internal Variable

Functions Expand All Collapse All

safeAdd

Parameters

Name	Type
a	uint
b	uint

Properties

Visibility public

Mutability pure

Requirements

c must be greater than or equal to a

Source Code

function safeAdd(uint256 a, uint256 b) public pure returns (uint256 c) {
  c = a + b;
  require(c >= a);
}

safeSub

Parameters

Name	Type
a	uint
b	uint

Properties

Visibility public

Mutability pure

Requirements

b must be less than or equal to a

Source Code

function safeSub(uint256 a, uint256 b) public pure returns (uint256 c) {
  require(b <= a);
  c = a - b;
}

safeMul

Parameters

Name	Type
a	uint
b	uint

Properties

Visibility public

Mutability pure

Requirements

One or more of the following: - b must be equal to c / a - OR a must be equal to 0

Source Code

function safeMul(uint256 a, uint256 b) public pure returns (uint256 c) {
  c = a * b;
  require(a == 0 || c / a == b);
}

safeDiv

Parameters

Name	Type
a	uint
b	uint

Properties

Visibility public

Mutability pure

Requirements

b must be greater than 0

Source Code

function safeDiv(uint256 a, uint256 b) public pure returns (uint256 c) {
  require(b > 0);
  c = a / b;
}

totalSupply

Parameters

This function has no parameters.

Properties

Visibility public

Mutability view

Source Code

function totalSupply() public view returns (uint256) {
  return _totalSupply - balances[address(0)];
}

balanceOf

Parameters

Name	Type
tokenOwner	address

Properties

Visibility public

Mutability view

Source Code

function balanceOf(address tokenOwner) public view returns (uint256 balance) {
  return balances[tokenOwner];
}

allowance

Parameters

Name	Type
tokenOwner	address
spender	address

Properties

Visibility public

Mutability view

Source Code

function allowance(address tokenOwner, address spender)
  public
  view
  returns (uint256 remaining)
{
  return allowed[tokenOwner][spender];
}

transfer

Parameters

Name	Type
to	address
tokens	uint

Properties

Visibility public

Mutability transaction

Source Code

function transfer(address to, uint256 tokens) public returns (bool success) {
  balances[msg.sender] = safeSub(balances[msg.sender], tokens);
  balances[to] = safeAdd(balances[to], tokens);
  emit Transfer(msg.sender, to, tokens);
  return true;
}

approve

Parameters

Name	Type
spender	address
tokens	uint

Properties

Visibility public

Mutability transaction

Source Code

function approve(address spender, uint256 tokens)
  public
  returns (bool success)
{
  allowed[msg.sender][spender] = tokens;
  emit Approval(msg.sender, spender, tokens);
  return true;
}

transferFrom

Parameters

Name	Type
from	address
to	address
tokens	uint

Properties

Visibility public

Mutability transaction

Source Code

function transferFrom(
  address from,
  address to,
  uint256 tokens
) public returns (bool success) {
  balances[from] = safeSub(balances[from], tokens);
  allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
  balances[to] = safeAdd(balances[to], tokens);
  emit Transfer(from, to, tokens);
  return true;
}

Internal Functions Expand All Collapse All

Internal functions are parts of the contract that can't be used directly, but instead are used by the public functions listed above.

Yearn Finance Protocol

ERC20

About link

Stats

Events (2) keyboard_arrow_up

Approval Event

Parameters help Event parameters list the data that an event contains.

Transfer Event

Parameters help Event parameters list the data that an event contains.

State Variables (6) keyboard_arrow_up

name Variable

symbol Variable

decimals Variable

_totalSupply Variable

balances Variable

allowed Variable

Functions Expand All Collapse All

safeAdd keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

safeSub keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

safeMul keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

safeDiv keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

totalSupply keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

balanceOf keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

allowance keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

transfer keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

approve keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

transferFrom keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

Internal Functions Expand All Collapse All

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About

Events (2)

Parameters

Parameters

State Variables (6)

safeAdd

Parameters

Requirements

safeSub

Parameters

Requirements

safeMul

Parameters

Requirements

safeDiv

Parameters

Requirements

totalSupply

Parameters

balanceOf

Parameters

allowance

Parameters

transfer

Parameters

approve

Parameters

transferFrom

Parameters