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uint256 -> uint

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use 256 in more places

break out separate functions
This commit is contained in:
Noah Zinsmeister
2019-12-04 17:08:38 -05:00
parent e88ba8b09c
commit f06361140c
9 changed files with 179 additions and 180 deletions
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6
contracts/libraries/Math.sol
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@ -1,14 +1,14 @@
pragma solidity 0.5.12;
library Math {
function min(uint256 x, uint256 y) internal pure returns (uint256 z) {
function min(uint x, uint y) internal pure returns (uint z) {
return x <= y ? x : y;
}
function sqrt(uint256 x) internal pure returns (uint256 y) {
function sqrt(uint x) internal pure returns (uint y) {
if (x == 0) return 0;
else if (x <= 3) return 1;
uint256 z = (x + 1) / 2;
uint z = (x + 1) / 2;
y = x;
while (z < y) {
y = z;

27
contracts/libraries/SafeMath.sol Normal file
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@ -0,0 +1,27 @@
pragma solidity 0.5.12;
library SafeMath {
function add(uint x, uint y) internal pure returns (uint z) {
require((z = x + y) >= x, "ds-math-add-overflow");
}
function sub(uint x, uint y) internal pure returns (uint z) {
require((z = x - y) <= x, "ds-math-sub-underflow");
}
function mul(uint x, uint y) internal pure returns (uint z) {
require(y == 0 || (z = x * y) / y == x, "ds-math-mul-overflow");
}
function clamp128(uint y) internal pure returns (uint128 z) {
z = y <= uint128(-1) ? uint128(y) : uint128(-1);
}
function downcast128(uint y) internal pure returns (uint128 z) {
require(y <= uint128(-1), "downcast-128-overflow");
z = uint128(y);
}
function downcast32(uint y) internal pure returns (uint32 z) {
require(y <= uint32(-1), "downcast-32-overflow");
z = uint32(y);
}
}

23
contracts/libraries/SafeMath256.sol
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@ -1,23 +0,0 @@
pragma solidity 0.5.12;
library SafeMath256 {
function add(uint256 x, uint256 y) internal pure returns (uint256 z) {
require((z = x + y) >= x, "ds-math-add-overflow");
}
function sub(uint256 x, uint256 y) internal pure returns (uint256 z) {
require((z = x - y) <= x, "ds-math-sub-underflow");
}
function mul(uint256 x, uint256 y) internal pure returns (uint256 z) {
require(y == 0 || (z = x * y) / y == x, "ds-math-mul-overflow");
}
function downcast128(uint256 y) internal pure returns (uint128 z) {
require(y <= uint128(-1), "downcast-128-overflow");
z = uint128(y);
}
function downcast32(uint256 y) internal pure returns (uint32 z) {
require(y <= uint32(-1), "downcast-32-overflow");
z = uint32(y);
}
}