Standard Library | The Coq Proof Assistant

The Coq Proof Assistant

# Library Coq.micromega.ZifyNat

Require Import BinInt Znat Zdiv.
Require Import ZifyClasses ZifyInst Zify.
Ltac zify_convert_to_euclidean_division_equations_flag ::= constr:(true).
Support for nat
#[local]
Existing Instance Inj_nat_Z.
#[global]
Instance Op_mod : BinOp Nat.modulo :=
{| TBOp := Z.modulo ; TBOpInj := Nat2Z.inj_mod |}.
Add Zify BinOp Op_mod.
#[global]
Instance Op_div : BinOp Nat.div :=
{| TBOp := Z.div ; TBOpInj := Nat2Z.inj_div |}.
Add Zify BinOp Op_div.
#[global]
Instance Op_pow : BinOp Nat.pow :=
{| TBOp := Z.pow ; TBOpInj := Nat2Z.inj_pow |}.
Add Zify BinOp Op_pow.
#[local] Open Scope Z_scope.
#[global]
Instance SatDiv : Saturate Z.div :=
{|
PArg1 := fun x => 0 <= x;
PArg2 := fun y => 0 <= y;
PRes := fun r => 0 <= r;
SatOk := Z_div_nonneg_nonneg
|}.
Add Zify Saturate SatDiv.
#[global]
Instance SatMod : Saturate Z.modulo :=
{|
PArg1 := fun x => 0 <= x;
PArg2 := fun y => 0 <= y;
PRes := fun r => 0 <= r;
SatOk := Z_mod_nonneg_nonneg
|}.
Add Zify Saturate SatMod.