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Added example for signextend

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Added sample assembly code for signextend
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Vignesh Karthikeyan 2019-06-05 02:02:40 +05:30 committed by GitHub
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docs/assembly.rst
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@ -402,7 +402,8 @@ Local Solidity variables are available for assignments, for example:
To be safe, always clear the data properly before you use it
in a context where this is important:
``uint32 x = f(); assembly { x := and(x, 0xffffffff) /* now use x */ }``
To clean signed types, you can use the ``signextend`` opcode.
To clean signed types, you can use the ``signextend`` opcode:
``assembly { signextend(0, x) }``
.. code::