Jip J. Dekker
fad1b07018
git-subtree-dir: software/minizinc git-subtree-split: 4f10c82056ffcb1041d7ffef29d77a7eef92cf76
17 lines
724 B
MiniZinc
17 lines
724 B
MiniZinc
%-----------------------------------------------------------------------------%
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% Constrains two arrays of int variables to represent inverse functions.
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% All the values in each array must be within the index set of the other array.
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%
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% Linear version.
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%-----------------------------------------------------------------------------%
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include "domain_encodings.mzn";
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predicate inverse(array[int] of var int: f, array[int] of var int: g) =
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let {
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array[int,int] of var 0..1: map_f = eq_encode(f);
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array[int,int] of var 0..1: map_g = eq_encode(g);
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} in forall (i in index_set(f), j in index_set(g)) (map_f[i,j] = map_g[j,i]);
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%-----------------------------------------------------------------------------%
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