Merge pull request #5367 from ethereum/signedYul

[Yul] Rename some builtin yul functions for signed types.
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chriseth 2018-11-14 01:09:28 +01:00 committed by GitHub
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@ -369,10 +369,10 @@ The following functions must be available:
+---------------------------------------------+-----------------------------------------------------------------+
| gtu256(x:u256, y:u256) -> z:bool | true if x > y, false otherwise |
+---------------------------------------------+-----------------------------------------------------------------+
| sltu256(x:s256, y:s256) -> z:bool | true if x < y, false otherwise |
| lts256(x:s256, y:s256) -> z:bool | true if x < y, false otherwise |
| | (for signed numbers in two's complement) |
+---------------------------------------------+-----------------------------------------------------------------+
| sgtu256(x:s256, y:s256) -> z:bool | true if x > y, false otherwise |
| gts256(x:s256, y:s256) -> z:bool | true if x > y, false otherwise |
| | (for signed numbers in two's complement) |
+---------------------------------------------+-----------------------------------------------------------------+
| equ256(x:u256, y:u256) -> z:bool | true if x == y, false otherwise |
@ -391,7 +391,7 @@ The following functions must be available:
+---------------------------------------------+-----------------------------------------------------------------+
| shru256(x:u256, y:u256) -> z:u256 | logical right shift of x by y |
+---------------------------------------------+-----------------------------------------------------------------+
| saru256(x:u256, y:u256) -> z:u256 | arithmetic right shift of x by y |
| sars256(x:s256, y:u256) -> z:u256 | arithmetic right shift of x by y |
+---------------------------------------------+-----------------------------------------------------------------+
| byte(n:u256, x:u256) -> v:u256 | nth byte of x, where the most significant byte is the 0th byte |
| | Cannot this be just replaced by and256(shr256(n, x), 0xff) and |