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Small SafeMath.sol gas improvements (add & mul). (#894)

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This commit is contained in:
DeltaBalances
2018-04-18 00:16:30 +02:00
committed by Francisco Giordano
parent c191757c6e
commit c63b203c1d
1 changed files with 4 additions and 4 deletions
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8
contracts/math/SafeMath.sol
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@ -10,11 +10,11 @@ library SafeMath {
/** /**
* @dev Multiplies two numbers, throws on overflow. * @dev Multiplies two numbers, throws on overflow.
*/ */
function mul(uint256 a, uint256 b) internal pure returns (uint256) { function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
if (a == 0) { if (a == 0) {
return 0; return 0;
} }
uint256 c = a * b; c = a * b;
assert(c / a == b); assert(c / a == b);
return c; return c;
} }
@ -40,8 +40,8 @@ library SafeMath {
/** /**
* @dev Adds two numbers, throws on overflow. * @dev Adds two numbers, throws on overflow.
*/ */
function add(uint256 a, uint256 b) internal pure returns (uint256) { function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
uint256 c = a + b; c = a + b;
assert(c >= a); assert(c >= a);
return c; return c;
} }