Set up prism with both Vrep and Hrep #32150
Description
We set up the prism over a polyhedron with the double description.
Before:
sage: P = polytopes.permutahedron(6)
sage: %time Q = P.prism()
CPU times: user 231 ms, sys: 7.92 ms, total: 239 ms
Wall time: 237 ms
sage: P = polytopes.hypercube(8)
sage: %time Q = P.prism()
CPU times: user 65.3 ms, sys: 28 µs, total: 65.3 ms
Wall time: 63.9 ms
sage: P = polytopes.cross_polytope(8)
sage: %time Q = P.prism()
CPU times: user 39.4 ms, sys: 0 ns, total: 39.4 ms
Wall time: 38.6 ms
sage: P = polytopes.hypercube(6, backend='field')
sage: %time Q = P.prism()
CPU times: user 3.47 s, sys: 3.97 ms, total: 3.48 s
Wall time: 3.48 s
After:
sage: P = polytopes.permutahedron(6)
sage: %time Q = P.prism()
CPU times: user 56.7 ms, sys: 3.85 ms, total: 60.6 ms
Wall time: 59.8 ms
sage: P = polytopes.hypercube(8)
sage: %time Q = P.prism()
CPU times: user 26.5 ms, sys: 0 ns, total: 26.5 ms
Wall time: 26.2 ms
sage: P = polytopes.cross_polytope(8)
sage: %time Q = P.prism()
CPU times: user 33.7 ms, sys: 0 ns, total: 33.7 ms
Wall time: 33 ms
sage: P = polytopes.hypercube(6, backend='field')
sage: %time Q = P.prism()
CPU times: user 14.1 ms, sys: 0 ns, total: 14.1 ms
Wall time: 13.8 ms
sage: P = polytopes.hypercube(10, backend='field')
sage: %time Q = P.prism()
CPU times: user 32.3 ms, sys: 0 ns, total: 32.3 ms
Wall time: 31.8 ms
Component: geometry
Keywords: polyhedron, double description, precomputed, prism
Author: Jonathan Kliem
Branch/Commit: f75726d
Reviewer: Travis Scrimshaw
Issue created by migration from https://trac.sagemath.org/ticket/32150