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-rw-r--r--docs/miscellaneous.rst4
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/miscellaneous.rst b/docs/miscellaneous.rst
index 1c4f918c..328ec6ea 100644
--- a/docs/miscellaneous.rst
+++ b/docs/miscellaneous.rst
@@ -327,8 +327,8 @@ Global Variables
- ``sha256(...) returns (bytes32)``: compute the SHA-256 hash of the :ref:`(tightly packed) arguments <abi_packed_mode>`
- ``ripemd160(...) returns (bytes20)``: compute the RIPEMD-160 hash of the :ref:`(tightly packed) arguments <abi_packed_mode>`
- ``ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) returns (address)``: recover address associated with the public key from elliptic curve signature, return zero on error
-- ``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``
-- ``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``
+- ``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``. 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``. Assert that ``k != 0`` starting from version 0.5.0.
- ``this`` (current contract's type): the current contract, explicitly convertible to ``address``
- ``super``: the contract one level higher in the inheritance hierarchy
- ``selfdestruct(address recipient)``: destroy the current contract, sending its funds to the given address