| Safe Haskell | None |
|---|
Quipper.Internal.QClasses
Description
This module defines quantum analogues of some Haskell type
classes. For instance, Haskell’s Eq a
(==) :: a -> a -> Bool.
Correspondingly, our QEq a qa ca
q_is_equal :: qa -> qa -> Circ (qa,qa,Qubit).
All quantum type classes assume that their instance types are
QData (or sometimes QCData).
Quantum type classes are designed to play nicely with the translation of Quipper.Internal.CircLifting.
Synopsis
- type QEq qc = QCData qc
- q_is_equal :: QEq qc => qc -> qc -> Circ (qc, qc, Qubit)
- q_is_not_equal :: QEq qc => qc -> qc -> Circ (qc, qc, Qubit)
- class (QEq qa, QData qa) => QOrd qa where
- q_lt :: QOrd qa => qa -> qa -> Circ (qa, qa, Qubit)
- q_gt :: QOrd qa => qa -> qa -> Circ (qa, qa, Qubit)
- q_le :: QOrd qa => qa -> qa -> Circ (qa, qa, Qubit)
- q_ge :: QOrd qa => qa -> qa -> Circ (qa, qa, Qubit)
The type class QEq
type QEq qc = QCData qc Source #
This is a quantum analogue of Haskell’s Eq type class. Default
implementations are provided; by default, equality is bitwise
equality of the underlying data structure. However, specific
instances can provide custom implementations. In this case,
q_is_equal is a minimal complete definition.
The type class QOrd
class (QEq qa, QData qa) => QOrd qa where Source #
This is a quantum analogue of Haskell's Ord type class. Its
purpose is to define a total ordering on each of its instances. The
functions in this class are assumed dirty in the sense that they do
not uncompute ancillas, and some of the inputs may be returned as
outputs. The functions are also assumed to be non-linear safe,
i.e., they apply no gates to their inputs except as control
sources. Minimal complete definition: q_less or q_greater. The default
implementations of q_max and q_min assume that both arguments
are of the same shape (for example, numbers of the same length).
Minimal complete definition
Nothing
Methods
q_less :: qa -> qa -> Circ Qubit Source #
Test for less than.
q_greater :: qa -> qa -> Circ Qubit Source #
Test for greater than.
q_leq :: qa -> qa -> Circ Qubit Source #
Test for less than or equal.
q_geq :: qa -> qa -> Circ Qubit Source #
Test for greater than or equal.
q_max :: qa -> qa -> Circ qa Source #
Compute the maximum of two values.
q_min :: qa -> qa -> Circ qa Source #
Compute the minimum of two values.