SafeMath (SafeMath.sol)

View Source: openzeppelin-solidity/contracts/math/SafeMath.sol

SafeMath

Unsigned math operations with safety checks that revert on error

Functions

• mul(uint256 a, uint256 b)

• div(uint256 a, uint256 b)

• sub(uint256 a, uint256 b)

• add(uint256 a, uint256 b)

• mod(uint256 a, uint256 b)

mul

Multiplies two unsigned integers, reverts on overflow.

function mul(uint256 a, uint256 b) internal pure
returns(uint256)

Arguments

Name	Type	Description
a	uint256
b	uint256

div

Integer division of two unsigned integers truncating the quotient, reverts on division by zero.

function div(uint256 a, uint256 b) internal pure
returns(uint256)

Arguments

Name	Type	Description
a	uint256
b	uint256

sub

Subtracts two unsigned integers, reverts on overflow (i.e. if subtrahend is greater than minuend).

function sub(uint256 a, uint256 b) internal pure
returns(uint256)

Arguments

Name	Type	Description
a	uint256
b	uint256

add

Adds two unsigned integers, reverts on overflow.

function add(uint256 a, uint256 b) internal pure
returns(uint256)

Arguments

Name	Type	Description
a	uint256
b	uint256

mod

Divides two unsigned integers and returns the remainder (unsigned integer modulo), reverts when dividing by zero.

function mod(uint256 a, uint256 b) internal pure
returns(uint256)

Arguments

Name	Type	Description
a	uint256
b	uint256