BitMath

This library provides functionality for computing bit properties of an unsigned integer

mostSignificantBit

function mostSignificantBit(uint256 x) internal pure returns (uint8 r)

Returns the index of the most significant bit of the number, where the least significant bit is at index 0 and the most significant bit is at index 255

The function satisfies the property: x >= 2mostSignificantBit(x) and x < 2(mostSignificantBit(x)+1)

Name Type Description
x uint256 the value for which to compute the most significant bit, must be greater than 0
Name Type Description
r uint8 the index of the most significant bit

leastSignificantBit

function leastSignificantBit(uint256 x) internal pure returns (uint8 r)

Returns the index of the least significant bit of the number, where the least significant bit is at index 0 and the most significant bit is at index 255

The function satisfies the property: (x & 2leastSignificantBit(x)) != 0 and (x & (2(leastSignificantBit(x)) - 1)) == 0)

Name Type Description
x uint256 the value for which to compute the least significant bit, must be greater than 0
Name Type Description
r uint8 the index of the least significant bit

BitMath

This library provides functionality for computing bit properties of an unsigned integer

mostSignificantBit

function mostSignificantBit(uint256 x) internal pure returns (uint8 r)

Returns the index of the most significant bit of the number, where the least significant bit is at index 0 and the most significant bit is at index 255

The function satisfies the property: x >= 2mostSignificantBit(x) and x < 2(mostSignificantBit(x)+1)

Name Type Description
x uint256 the value for which to compute the most significant bit, must be greater than 0
Name Type Description
r uint8 the index of the most significant bit

leastSignificantBit

function leastSignificantBit(uint256 x) internal pure returns (uint8 r)

Returns the index of the least significant bit of the number, where the least significant bit is at index 0 and the most significant bit is at index 255

The function satisfies the property: (x & 2leastSignificantBit(x)) != 0 and (x & (2(leastSignificantBit(x)) - 1)) == 0)

Name Type Description
x uint256 the value for which to compute the least significant bit, must be greater than 0
Name Type Description
r uint8 the index of the least significant bit

BitMath

This library provides functionality for computing bit properties of an unsigned integer

mostSignificantBit

function mostSignificantBit(uint256 x) internal pure returns (uint8 r)

Returns the index of the most significant bit of the number, where the least significant bit is at index 0 and the most significant bit is at index 255

The function satisfies the property: x >= 2mostSignificantBit(x) and x < 2(mostSignificantBit(x)+1)

Name Type Description
x uint256 the value for which to compute the most significant bit, must be greater than 0
Name Type Description
r uint8 the index of the most significant bit

leastSignificantBit

function leastSignificantBit(uint256 x) internal pure returns (uint8 r)

Returns the index of the least significant bit of the number, where the least significant bit is at index 0 and the most significant bit is at index 255

The function satisfies the property: (x & 2leastSignificantBit(x)) != 0 and (x & (2(leastSignificantBit(x)) - 1)) == 0)

Name Type Description
x uint256 the value for which to compute the least significant bit, must be greater than 0
Name Type Description
r uint8 the index of the least significant bit