LowGasSafeMath

Contains methods for doing math operations that revert on overflow or underflow for minimal gas cost

Functions

add

function add(

uint256 x,

uint256 y

) internal pure returns (uint256 z)

Returns x + y, reverts if sum overflows uint256

Parameters:

Name	Type	Description
x	uint256	The augend
y	uint256	The addend

Return Values:

Name	Type	Description
z	uint256	The sum of x and y

sub

function sub(

uint256 x,

uint256 y

) internal pure returns (uint256 z)

Returns x - y, reverts if underflows

Parameters:

Name	Type	Description
x	uint256	The minuend
y	uint256	The subtrahend

Return Values:

Name	Type	Description
z	uint256	The difference of x and y

mul

function mul(

uint256 x,

uint256 y

) internal pure returns (uint256 z)

Returns x * y, reverts if overflows

Parameters:

Name	Type	Description
x	uint256	The multiplicand
y	uint256	The multiplier

Return Values:

Name	Type	Description
z	uint256	The product of x and y

add

function add(

int256 x,

int256 y

) internal pure returns (int256 z)

Returns x + y, reverts if overflows or underflows

Parameters:

Name	Type	Description
x	int256	The augend
y	int256	The addend

Return Values:

Name	Type	Description
z	int256	The sum of x and y

sub

function sub(

int256 x,

int256 y

) internal pure returns (int256 z)

Returns x - y, reverts if overflows or underflows

Parameters:

Name	Type	Description
x	int256	The minuend
y	int256	The subtrahend

Return Values:

Name	Type	Description
z	int256	The difference of x and y