Careful Math (CarefulMath.sol)
Derived from OpenZeppelin's SafeMath library https://github.com/OpenZeppelin/openzeppelin-solidity/blob/master/contracts/math/SafeMath.sol​
Functions
- mul(uint256 a, uint256 b)
- div(uint256 a, uint256 b)
- sub(uint256 a, uint256 b)
- add(uint256 a, uint256 b)
- addThenSub(uint256 a, uint256 b, uint256 c)
mul
Multiplies two numbers, returns an error on overflow.
1
function mul(uint256 a, uint256 b) internal pure
2
returns(enum ErrorReporter.Error, uint256)
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Arguments
Name
Type
Description
a
uint256
​
b
uint256
​
div
Integer division of two numbers, truncating the quotient.
1
function div(uint256 a, uint256 b) internal pure
2
returns(enum ErrorReporter.Error, uint256)
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Arguments
Name
Type
Description
a
uint256
​
b
uint256
​
sub
Subtracts two numbers, returns an error on overflow (i.e. if subtrahend is greater than minuend).
1
function sub(uint256 a, uint256 b) internal pure
2
returns(enum ErrorReporter.Error, uint256)
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Arguments
Name
Type
Description
a
uint256
​
b
uint256
​
add
Adds two numbers, returns an error on overflow.
1
function add(uint256 a, uint256 b) internal pure
2
returns(enum ErrorReporter.Error, uint256)
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Arguments
Name
Type
Description
a
uint256
​
b
uint256
​
addThenSub
add a and b and then subtract c
1
function addThenSub(uint256 a, uint256 b, uint256 c) internal pure
2
returns(enum ErrorReporter.Error, uint256)
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Arguments
Name
Type
Description
a
uint256
​
b
uint256
​
c
uint256
​
Last modified 9mo ago
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Functions