UnsafeMath

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Contains methods that perform common math functions but do not do any overflow or underflow checks

Functions

divRoundingUp

Returns ceil(x / y)

division by 0 has unspecified behavior, and must be checked externally

function divRoundingUp(uint256 x, uint256 y) internal pure returns (uint256 z);

Parameters

Name	Type	Description
x	uint256	The dividend
y	uint256	The divisor

Returns

Name	Type	Description
z	uint256	The quotient, ceil(x / y)

simpleMulDiv

Calculates floor(a×b÷denominator)

division by 0 has unspecified behavior, and must be checked externally

function simpleMulDiv(uint256 a, uint256 b, uint256 denominator) internal pure returns (uint256 result);

Parameters

Name	Type	Description
a	uint256	The multiplicand
b	uint256	The multiplier
denominator	uint256	The divisor

Returns

Name	Type	Description
result	uint256	The 256-bit result, floor(a×b÷denominator)