Agda-2.6.2.2: A dependently typed functional programming language and proof assistant
Safe HaskellNone
LanguageHaskell2010

Agda.Utils.PartialOrd

Synopsis

Documentation

data PartialOrdering Source #

The result of comparing two things (of the same type).

Constructors

POLT

Less than.

POLE

Less or equal than.

POEQ

Equal

POGE

Greater or equal.

POGT

Greater than.

POAny

No information (incomparable).

Instances

Instances details
Bounded PartialOrdering Source # 
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Defined in Agda.Utils.PartialOrd

Enum PartialOrdering Source # 
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Eq PartialOrdering Source # 
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Show PartialOrdering Source # 
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Semigroup PartialOrdering Source #

Partial ordering forms a monoid under sequencing.

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Monoid PartialOrdering Source # 
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PartialOrd PartialOrdering Source #

Less is ``less general'' (i.e., more precise).

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Defined in Agda.Utils.PartialOrd

leqPO :: PartialOrdering -> PartialOrdering -> Bool Source #

Comparing the information content of two elements of PartialOrdering. More precise information is smaller.

Includes equality: x leqPO x == True.

oppPO :: PartialOrdering -> PartialOrdering Source #

Opposites.

related a po b iff related b (oppPO po) a.

orPO :: PartialOrdering -> PartialOrdering -> PartialOrdering Source #

Combining two pieces of information (picking the least information). Used for the dominance ordering on tuples.

orPO is associative, commutative, and idempotent. orPO has dominant element POAny, but no neutral element.

seqPO :: PartialOrdering -> PartialOrdering -> PartialOrdering Source #

Chains (transitivity) x R y S z.

seqPO is associative, commutative, and idempotent. seqPO has dominant element POAny and neutral element (unit) POEQ.

fromOrderings :: [Ordering] -> PartialOrdering Source #

Represent a non-empty disjunction of Orderings as PartialOrdering.

toOrderings :: PartialOrdering -> [Ordering] Source #

A PartialOrdering information is a disjunction of Ordering informations.

Comparison with partial result

type Comparable a = a -> a -> PartialOrdering Source #

class PartialOrd a where Source #

Decidable partial orderings.

Instances

Instances details
PartialOrd Int Source # 
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PartialOrd Integer Source # 
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PartialOrd () Source # 
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PartialOrd PartialOrdering Source #

Less is ``less general'' (i.e., more precise).

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PartialOrd Cohesion Source #

Flatter is smaller.

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Defined in Agda.Syntax.Common

PartialOrd Relevance Source #

More relevant is smaller.

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Defined in Agda.Syntax.Common

PartialOrd Quantity Source #

Note that the order is ω ≤ 0,1, more options is smaller.

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Defined in Agda.Syntax.Common

PartialOrd Modality Source #

Dominance ordering.

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Defined in Agda.Syntax.Common

PartialOrd Order Source #

Information order: Unknown is least information. The more we decrease, the more information we have.

When having comparable call-matrices, we keep the lesser one. Call graph completion works toward losing the good calls, tending towards Unknown (the least information).

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Defined in Agda.Termination.Order

PartialOrd a => PartialOrd (Maybe a) Source #

Nothing and Just _ are unrelated.

Partial ordering for Maybe a is the same as for Either () a.

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Ord a => PartialOrd (Inclusion [a]) Source #

Sublist for ordered lists.

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Ord a => PartialOrd (Inclusion (Set a)) Source #

Sets are partially ordered by inclusion.

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PartialOrd a => PartialOrd (Pointwise [a]) Source #

The pointwise ordering for lists of the same length.

There are other partial orderings for lists, e.g., prefix, sublist, subset, lexicographic, simultaneous order.

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Defined in Agda.Utils.PartialOrd

PartialOrd t => PartialOrd (UnderComposition t) Source # 
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Defined in Agda.Syntax.Common

PartialOrd t => PartialOrd (UnderAddition t) Source # 
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Defined in Agda.Syntax.Common

PartialOrd (CallMatrixAug cinfo) Source # 
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Defined in Agda.Termination.CallMatrix

PartialOrd a => PartialOrd (CallMatrix' a) Source # 
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Defined in Agda.Termination.CallMatrix

(PartialOrd a, PartialOrd b) => PartialOrd (Either a b) Source #

Partial ordering for disjoint sums: Left _ and Right _ are unrelated.

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Defined in Agda.Utils.PartialOrd

(PartialOrd a, PartialOrd b) => PartialOrd (a, b) Source #

Pointwise partial ordering for tuples.

related (x1,x2) o (y1,y2) iff related x1 o x2 and related y1 o y2.

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Defined in Agda.Utils.PartialOrd

Methods

comparable :: Comparable (a, b) Source #

(Ord i, PartialOrd a) => PartialOrd (Matrix i a) Source #

Pointwise comparison. Only matrices with the same dimension are comparable.

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Defined in Agda.Termination.SparseMatrix

related :: PartialOrd a => a -> PartialOrdering -> a -> Bool Source #

Are two elements related in a specific way?

related a o b holds iff comparable a b is contained in o.

Totally ordered types.

Generic partially ordered types.

newtype Pointwise a Source #

Pointwise comparison wrapper.

Constructors

Pointwise 

Fields

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Functor Pointwise Source # 
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Defined in Agda.Utils.PartialOrd

Methods

fmap :: (a -> b) -> Pointwise a -> Pointwise b #

(<$) :: a -> Pointwise b -> Pointwise a #

Eq a => Eq (Pointwise a) Source # 
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Defined in Agda.Utils.PartialOrd

Methods

(==) :: Pointwise a -> Pointwise a -> Bool #

(/=) :: Pointwise a -> Pointwise a -> Bool #

Show a => Show (Pointwise a) Source # 
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Defined in Agda.Utils.PartialOrd

PartialOrd a => PartialOrd (Pointwise [a]) Source #

The pointwise ordering for lists of the same length.

There are other partial orderings for lists, e.g., prefix, sublist, subset, lexicographic, simultaneous order.

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Defined in Agda.Utils.PartialOrd

newtype Inclusion a Source #

Inclusion comparison wrapper.

Constructors

Inclusion 

Fields

Instances

Instances details
Functor Inclusion Source # 
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Methods

fmap :: (a -> b) -> Inclusion a -> Inclusion b #

(<$) :: a -> Inclusion b -> Inclusion a #

Eq a => Eq (Inclusion a) Source # 
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Defined in Agda.Utils.PartialOrd

Methods

(==) :: Inclusion a -> Inclusion a -> Bool #

(/=) :: Inclusion a -> Inclusion a -> Bool #

Ord a => Ord (Inclusion a) Source # 
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Show a => Show (Inclusion a) Source # 
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Ord a => PartialOrd (Inclusion [a]) Source #

Sublist for ordered lists.

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Defined in Agda.Utils.PartialOrd

Ord a => PartialOrd (Inclusion (Set a)) Source #

Sets are partially ordered by inclusion.

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Defined in Agda.Utils.PartialOrd

PartialOrdering is itself partially ordered!