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| author | chriseth <c@ethdev.com> | 2016-08-12 21:54:17 +0800 |
|---|---|---|
| committer | chriseth <c@ethdev.com> | 2016-08-16 20:53:01 +0800 |
| commit | d731225d02c9b8d6dc9f2ba632923b765d0e111d (patch) | |
| tree | c91454591ceb4a1329adafb1dc66d2500fe9f3c1 /docs | |
| parent | 034d436933806c204b84b0500e2116938cb6a030 (diff) | |
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Actually better to return zero on error.
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/miscellaneous.rst | 2 | ||||
| -rw-r--r-- | docs/units-and-global-variables.rst | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/docs/miscellaneous.rst b/docs/miscellaneous.rst index ca0cf593..804d69ef 100644 --- a/docs/miscellaneous.rst +++ b/docs/miscellaneous.rst @@ -286,7 +286,7 @@ Global Variables - ``sha3(...) returns (bytes32)``: compute the Ethereum-SHA-3 (KECCAK-256) hash of the (tightly packed) arguments - ``sha256(...) returns (bytes32)``: compute the SHA-256 hash of the (tightly packed) arguments - ``ripemd160(...) returns (bytes20)``: compute the RIPEMD-160 hash of the (tightly packed) arguments -- ``ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) returns (address)``: recover address associated with the public key from elliptic curve signature +- ``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`` - ``this`` (current contract's type): the current contract, explicitly convertible to ``address`` diff --git a/docs/units-and-global-variables.rst b/docs/units-and-global-variables.rst index 62b9158d..d1d578ed 100644 --- a/docs/units-and-global-variables.rst +++ b/docs/units-and-global-variables.rst @@ -95,7 +95,7 @@ Mathematical and Cryptographic Functions ``ripemd160(...) returns (bytes20)``: compute RIPEMD-160 hash of the (tightly packed) arguments ``ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) returns (address)``: - recover the address associated with the public key from elliptic curve signature + recover the address associated with the public key from elliptic curve signature or return zero on error In the above, "tightly packed" means that the arguments are concatenated without padding. This means that the following are all identical:: |