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| -rw-r--r-- | ps1/main.tex | 8 |
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diff --git a/ps1/main.tex b/ps1/main.tex index 65c7707..920cb3c 100644 --- a/ps1/main.tex +++ b/ps1/main.tex @@ -152,6 +152,14 @@ t = w} \section*{Problem 3} +\paragraph{First solution \emph{(too easy, feels like cheating).}} We saw in +class how to compute the most signigicant bit set to one. But observe that +\texttt{x \& $\sim$(x-1)} will clear all the bits of $x$ except for the least +significant bit set to one. Assuming access to a procedure \texttt{msb} to +compute the most significant bit set to one, we can simply define +\texttt{lsb(x) $:=$ msb(x \& $\sim$(x-1))}. + +\paragraph{Second solution.} Using Problem 2 and what we did in class, we assume that we have access to the following procedures: \begin{itemize*} |