kernel

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kernel

$\begin{usage} kernel(a,r,c,p,w) \end{usage}$

Signature

kernel: (A A Z,Z,Z,A A Z) $\to$ Z

where
Z == MachineInteger

A == PrimitiveArray

$\begin{params} {\em a, w} & \htmlref{\texttt{PrimitiveArray}}{PrimitiveArray} ... ... & \htmlref{\texttt{MachineInteger}}{MachineInteger} & a prime\\\end{params}$

$\begin{retval} Stores a basis of the kernel of {\em a} in the columns of {\em w... ...ich must be large enough, and returns the dimension of the kernel. \end{retval}$

$\begin{remarks} Does not make a copy of $a$, but performs all the computations in--place, modifying the entries of $a$. \end{remarks}$

Manuel Bronstein 2000-12-13