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author | Amir Bandeali <abandeali1@gmail.com> | 2018-05-16 03:52:49 +0800 |
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committer | Amir Bandeali <abandeali1@gmail.com> | 2018-05-16 03:52:49 +0800 |
commit | 9e0471bfbb4bb2b3b490e10ce34b16c88e8bab9a (patch) | |
tree | f72aae5170b6f1f6d3d70ebf6c03ed171680ff50 /packages/sol-compiler/test/fixtures/contracts/base/SafeMath.sol | |
parent | 9744b1906a111aa0c65c8fafb4db66aef32a5a23 (diff) | |
parent | 6aed4fb1ae27dabed027c855f2cbdc0bfb4f3b6b (diff) | |
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Merge branch 'development' into v2-prototype
Diffstat (limited to 'packages/sol-compiler/test/fixtures/contracts/base/SafeMath.sol')
-rw-r--r-- | packages/sol-compiler/test/fixtures/contracts/base/SafeMath.sol | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/packages/sol-compiler/test/fixtures/contracts/base/SafeMath.sol b/packages/sol-compiler/test/fixtures/contracts/base/SafeMath.sol new file mode 100644 index 000000000..92ce11cde --- /dev/null +++ b/packages/sol-compiler/test/fixtures/contracts/base/SafeMath.sol @@ -0,0 +1,41 @@ +pragma solidity ^0.4.14; + +contract SafeMath { + function safeMul(uint a, uint b) internal constant returns (uint256) { + uint c = a * b; + assert(a == 0 || c / a == b); + return c; + } + + function safeDiv(uint a, uint b) internal constant returns (uint256) { + uint c = a / b; + return c; + } + + function safeSub(uint a, uint b) internal constant returns (uint256) { + assert(b <= a); + return a - b; + } + + function safeAdd(uint a, uint b) internal constant returns (uint256) { + uint c = a + b; + assert(c >= a); + return c; + } + + function max64(uint64 a, uint64 b) internal constant returns (uint64) { + return a >= b ? a : b; + } + + function min64(uint64 a, uint64 b) internal constant returns (uint64) { + return a < b ? a : b; + } + + function max256(uint256 a, uint256 b) internal constant returns (uint256) { + return a >= b ? a : b; + } + + function min256(uint256 a, uint256 b) internal constant returns (uint256) { + return a < b ? a : b; + } +} |