Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
C<isl_pip> takes the same input as the C<example> program
from the C<piplib> distribution, i.e., a set of constraints
-on the parameters, a line contains only -1 and finally a set
+on the parameters, a line containing only -1 and finally a set
of constraints on a parametric polyhedron.
The coefficients of the parameters appear in the last columns
(but before the final constant column).