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Merge pull request #1816 from notoria/clpz

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Small fixes for `CLP(ℤ)`
This commit is contained in:
Mark Thom
2023-05-27 11:07:50 -06:00
committed by GitHub
parent 462097d956 495df8846a
commit 7bc7f0ad06
1 changed files with 28 additions and 29 deletions
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15
src/lib/clpz.pl
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@@ -4990,7 +4990,6 @@ run_propagator(ptzdiv(X,Y,Z), MState) -->
run_propagator(pmod(X,Y,Z), MState) -->
( Y == 0 -> { false }
; Y == Z -> { false }
% ; nonvar(Y), Z == X -> true
; X == Y -> kill(MState), queue_goal(Z = 0)
; true
),
@@ -5020,8 +5019,6 @@ run_propagator(pmod(X,Y,Z), MState) -->
% queue_goal(X #=< XMax)
; true
)
% kill(MState),
% queue_goal(X #= Z + Y * _) % Add a variable to be efficient.
; nonvar(Z), nonvar(X) ->
( Z > 0 ->
( X < 0 -> true
@@ -5156,7 +5153,7 @@ run_propagator(pmodz(X,Y,Z), MState) -->
domain_remove_smaller_than(ZD3, ZMin, ZD5) },
fd_put(Z, ZD5, ZPs)
% queue_goal(Z in ZMin..0)
; { fd_get(Y, _, n(YL), n(YU), _) } ->
; { fd_get(Y, _, n(YL), n(YU), _), YL < 0, YU > 0 } ->
ZMin is YL + 1,
ZMax is YU - 1,
{ fd_get(Z, ZD1, ZPs),
@@ -5181,21 +5178,23 @@ run_propagator(pmodz(X,Y,Z), MState) -->
)
).
run_propagator(pmody(X,Y,Z), MState) -->
run_propagator(pmody(_X,Y,Z), _MState) -->
( nonvar(Y) -> true % Nothing to do.
% ; nonvar(X) -> true
; nonvar(Z) ->
( Z > 0 -> % queue_goal(Y #> Z)
( Z > 0 ->
{ fd_get(Y, YD, YPs),
YMin is Z + 1,
domain_remove_smaller_than(YD, YMin, YD1) },
fd_put(Y, YD1, YPs)
; Z < 0 -> % queue_goal(Y #< Z)
% queue_goal(Y #> Z)
; Z < 0 ->
{ fd_get(Y, YD, YPs),
YMax is Z - 1,
domain_remove_greater_than(YD, YMax, YD1) },
fd_put(Y, YD1, YPs)
; Z =:= 0 -> kill(MState), queue_goal(X / Y #= _)
% queue_goal(Y #< Z)
; Z =:= 0 % Multiple solutions so do nothing special.
)
; ( { fd_get(Z, _, n(ZL), _, _), ZL > 0 } ->
{ fd_get(Y, YD, YPs),