Canonical numClosedFieldType := NumClosedFieldType type conjMixin.
End Implementation.
Definition divisor := Implementation.type.
Module Internals.
Local Notation algC := type.
Local Notation "z ^*" := (conj z) (at level 2, format "z ^*") : ring_scope.
Local Notation QtoC := (ratr : rat -> algC).
Local Notation QtoCm := [rmorphism of QtoC].
Local Notation pQtoC := (map_poly QtoC).
Local Notation ZtoQ := (intr : int -> rat).
Local Notation ZtoC := (intr : int -> algC).
Local Notation Creal := (Num.real : qualifier 0 algC).
Fact algCi_subproof : {i : algC | i ^+ 2 = -1}.
Fact floorC_subproof x : {m | x \is Creal -> ZtoC m <= x < ZtoC (m + 1)}.
Fact minCpoly_subproof (x : algC) :
{p | p \is monic & forall q, root (pQtoC q) x = (p %| q)%R}.
Definition algC_divisor (x : algC) := x : divisor.
Definition int_divisor m := m%:~R : divisor.
Definition nat_divisor n := n%:R : divisor.
End Internals.
Module Import Exports.
Notation algC := type.
Delimit Scope C_scope with C.
Delimit Scope C_core_scope with Cc.
Delimit Scope C_expanded_scope with Cx.
Open Scope C_core_scope.
Canonical eqType.
Canonical choiceType.
Canonical countType.
Canonical zmodType.
Canonical countZmodType.
Canonical ringType.
Canonical countRingType.
Canonical unitRingType.
Canonical comRingType.
Canonical comUnitRingType.
Canonical idomainType.
Canonical numDomainType.
Canonical fieldType.
Canonical numFieldType.
Canonical decFieldType.
Canonical closedFieldType.
Canonical numClosedFieldType.
Notation algCeq := eqType.
Notation algCzmod := zmodType.
Notation algCring := ringType.
Notation algCuring := unitRingType.
Notation algCnum := numDomainType.
Notation algCfield := fieldType.
Notation algCnumField := numFieldType.
Notation algCnumClosedField := numClosedFieldType.
Notation Creal := (@Num.Def.Rreal numDomainType).
Definition getCrat := let: GetCrat_spec CtoQ _ := getCrat_subproof in CtoQ.
Definition Crat : pred_class := fun x : algC => ratr (getCrat x) == x.
Definition floorC x := sval (floorC_subproof x).
Definition Cint : pred_class := fun x : algC => (floorC x)%:~R == x.
Definition truncC x := if x >= 0 then `|floorC x|%N else 0%N.
Definition Cnat : pred_class := fun x : algC => (truncC x)%:R == x.
Definition minCpoly x : {poly algC} :=
let: exist2 p _ _ := minCpoly_subproof x in map_poly ratr p.
Coercion nat_divisor : nat >-> divisor.
Coercion int_divisor : int >-> divisor.
Coercion algC_divisor : algC >-> divisor.

Lemma nCdivE (p : nat) : p = p%:R :> divisor. Proof. by []. Qed.