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Fix min/2 and max/2

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?- X in 0..1, Y in 2..4, Z #= max(X,Y).
   clpz:(X in 0..1), clpz:(Z#=max(X,Y)), clpz:(Z in 2..4), clpz:(Z#>=Y), clpz:(Y in 2..4). % unexpected.
?- X in 0..1, Y in 2..4, Z #= max(Y,X).
   Y = Z, clpz:(X in 0..1), clpz:(Y in 2..4).
This commit is contained in:
notoria
2024-01-07 20:14:32 +01:00
parent 92b85d4ba6
commit fe371ff1d1
1 changed files with 2 additions and 2 deletions
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4
src/lib/clpz.pl
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@@ -5398,7 +5398,7 @@ run_propagator(pmax(X,Y,Z), MState) -->
; { fd_get(Z, ZD, ZPs) } ->
{ fd_get(X, _, XInf, XSup, _),
fd_get(Y, _, YInf, YSup, _) },
( { YInf cis_gt YSup } -> kill(MState), queue_goal(Z = Y)
( { YInf cis_gt XSup } -> kill(MState), queue_goal(Z = Y)
; { YSup cis_lt XInf } -> kill(MState), queue_goal(Z = X)
; { n(M) cis max(XSup, YSup) } ->
{ domain_remove_greater_than(ZD, M, ZD1) },
@@ -5433,7 +5433,7 @@ run_propagator(pmin(X,Y,Z), MState) -->
; { fd_get(Z, ZD, ZPs) } ->
{ fd_get(X, _, XInf, XSup, _),
fd_get(Y, _, YInf, YSup, _) },
( { YSup cis_lt YInf } -> kill(MState), Z = Y
( { YSup cis_lt XInf } -> kill(MState), Z = Y
; { YInf cis_gt XSup } -> kill(MState), Z = X
; { n(M) cis min(XInf, YInf) } ->
{ domain_remove_smaller_than(ZD, M, ZD1) },