Jip J. Dekker
f2a1c4e389
git-subtree-dir: software/mza git-subtree-split: f970a59b177c13ca3dd8aaef8cc6681d83b7e813
39 lines
1.5 KiB
MiniZinc
39 lines
1.5 KiB
MiniZinc
include "fzn_bin_packing_capa.mzn";
|
|
include "fzn_bin_packing_capa_reif.mzn";
|
|
|
|
/** @group globals.packing
|
|
Requires that each item \p i with weight \a w[\p i], be put into \a bin[\p i] such
|
|
that the sum of the weights of the items in each bin \p b does not exceed the
|
|
capacity \a c[\p b].
|
|
|
|
Assumptions:
|
|
- forall \p i, \a w[\p i] >=0
|
|
- forall \p b, \a c[\p b] >=0
|
|
*/
|
|
predicate bin_packing_capa(array[int] of int: c,
|
|
array[int] of var int: bin,
|
|
array[int] of int: w) =
|
|
assert(index_set(bin) = index_set(w),
|
|
"bin_packing_capa: the bin and weight arrays must have identical index sets",
|
|
assert(lb_array(w) >= 0,
|
|
"bin_packing_capa: the weights must be non-negative",
|
|
assert(lb_array(c) >= 0,
|
|
"bin_packing_capa: the capacities must be non-negative",
|
|
fzn_bin_packing_capa(c, bin, w)
|
|
)));
|
|
|
|
predicate bin_packing_capa_reif(array[int] of int: c,
|
|
array[int] of var int: bin,
|
|
array[int] of int: w,
|
|
var bool: b) =
|
|
assert(index_set(bin) = index_set(w),
|
|
"bin_packing_capa: the bin and weight arrays must have identical index sets",
|
|
assert(lb_array(w) >= 0,
|
|
"bin_packing_capa: the weights must be non-negative",
|
|
assert(lb_array(c) >= 0,
|
|
"bin_packing_capa: the capacities must be non-negative",
|
|
fzn_bin_packing_capa_reif(c, bin, w, b)
|
|
)));
|
|
|
|
%-----------------------------------------------------------------------------%
|