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Diffstat (limited to 'test/compilationTests/corion/safeMath.sol')
| -rw-r--r-- | test/compilationTests/corion/safeMath.sol | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/compilationTests/corion/safeMath.sol b/test/compilationTests/corion/safeMath.sol new file mode 100644 index 00000000..9e27d379 --- /dev/null +++ b/test/compilationTests/corion/safeMath.sol @@ -0,0 +1,33 @@ +pragma solidity ^0.4.11; + +contract safeMath { + function safeAdd(uint256 a, uint256 b) internal returns(uint256) { + /* + Biztonsagos hozzadas. Tulcsordulas elleni vedelem. + A vegeredmeny nem lehet kevesebb mint az @a, ha igen megall a kod. + + @a Amihez hozzaadni kell + @b Amennyit hozzaadni kell. + @uint256 Vegeredmeny. + */ + if ( b > 0 ) { + assert( a + b > a ); + } + return a + b; + } + + function safeSub(uint256 a, uint256 b) internal returns(uint256) { + /* + Biztonsagos kivonas. Tulcsordulas elleni vedelem. + A vegeredmeny nem lehet tobb mint az @a, ha igen megall a kod. + + @a Amibol kivonni kell. + @b Amennyit kivonni kell. + @uint256 Vegeredmeny. + */ + if ( b > 0 ) { + assert( a - b < a ); + } + return a - b; + } +}
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