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colSwap!,rowSwap!

colSwap!($A,j_1,j_2$)
colSwap!( $A,j_1,j_2,i_1,i_2$)
rowSwap!($A,i_1,i_2$)
rowSwap!( $A,i_1,i_2,j_1,j_2$)

\begin{signatures} colSwap!,rowSwap!:& (\%, I, I) $\to$\ \%\\ colSwap!,rowSwap!:& (\%, I, I, I, I) $\to$\ \%\\\end{signatures}



\begin{params} {\em A} & \% & A matrix\\ {\em j1}, {\em j2} & \htmlref{\textt... ...htmlref{\texttt{MachineInteger}}{MachineInteger} & row indices\\\end{params}

\begin{descr} The ${j_1}^{{\rm th}}$\ and ${j_2}^{{\rm th}}$\ columns (resp.~${... ...or rows $i_1$\ to $i_2$\ (resp.~columns $j_1$\ to $j_2$) inclusive. \end{descr}

Manuel Bronstein 2000-12-13