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| author | chriseth <chris@ethereum.org> | 2018-02-15 20:04:40 +0800 |
|---|---|---|
| committer | chriseth <chris@ethereum.org> | 2018-02-15 20:52:17 +0800 |
| commit | 2b5a5a8669cee8698f3f2cf970417a7123fbbe25 (patch) | |
| tree | eb5d78372cd7f849d7a6a2bc49cbb1280bf78ecc /docs/units-and-global-variables.rst | |
| parent | 5746e2d7d867440780ced524dd7e7c29149cf3e2 (diff) | |
| download | dexon-solidity-2b5a5a8669cee8698f3f2cf970417a7123fbbe25.tar.gz dexon-solidity-2b5a5a8669cee8698f3f2cf970417a7123fbbe25.tar.zst dexon-solidity-2b5a5a8669cee8698f3f2cf970417a7123fbbe25.zip | |
Make addmod and mulmod revert if the last argument is zero.
Diffstat (limited to 'docs/units-and-global-variables.rst')
| -rw-r--r-- | docs/units-and-global-variables.rst | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/units-and-global-variables.rst b/docs/units-and-global-variables.rst index ce58cf56..8f49c600 100644 --- a/docs/units-and-global-variables.rst +++ b/docs/units-and-global-variables.rst @@ -107,9 +107,9 @@ Mathematical and Cryptographic Functions ---------------------------------------- ``addmod(uint x, uint y, uint k) returns (uint)``: - compute ``(x + y) % k`` where the addition is performed with arbitrary precision and does not wrap around at ``2**256``. + compute ``(x + y) % k`` where the addition is performed with arbitrary precision and does not wrap around at ``2**256``. Assert that ``k != 0`` starting from version 0.5.0. ``mulmod(uint x, uint y, uint k) returns (uint)``: - compute ``(x * y) % k`` where the multiplication is performed with arbitrary precision and does not wrap around at ``2**256``. + compute ``(x * y) % k`` where the multiplication is performed with arbitrary precision and does not wrap around at ``2**256``. Assert that ``k != 0`` starting from version 0.5.0. ``keccak256(...) returns (bytes32)``: compute the Ethereum-SHA-3 (Keccak-256) hash of the :ref:`(tightly packed) arguments <abi_packed_mode>` ``sha256(...) returns (bytes32)``: |