Jip J. Dekker
f2a1c4e389
git-subtree-dir: software/mza git-subtree-split: f970a59b177c13ca3dd8aaef8cc6681d83b7e813
24 lines
978 B
MiniZinc
24 lines
978 B
MiniZinc
include "fzn_alternative.mzn";
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include "fzn_alternative_reif.mzn";
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/** @group globals.scheduling
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Alternative constraint for optional tasks. Task (\a s0,\a d0) spans the
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optional tasks (\a s[\p i],\a d[\p i]) in the array arguments
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and at most one can occur
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*/
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predicate alternative(var opt int: s0, var int: d0,
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array[int] of var opt int: s,
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array[int] of var int: d) =
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assert(index_set(s) = index_set(d),
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"alternative: index sets of third and fourth argument must be identical",
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fzn_alternative(s0, d0, s, d)
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);
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predicate alternative_reif(var opt int: s0, var int: d0,
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array[int] of var opt int: s,
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array[int] of var int: d, var bool: b) =
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assert(index_set(s) = index_set(d),
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"alternative: index sets of third and fourth argument must be identical",
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fzn_alternative_reif(s0, d0, s, d, b)
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);
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