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(**
* Efficient (but uncertified) extraction of usual [Z] functions
* into equivalent versions in Haskell's Prelude that are defined
* for any [Num] typeclass instances. Useful in combination with
* [Extract Inductive Z] that maps [Z] onto a Haskell type that
* implements [Num].
*)
From Stdlib Require Extraction.
From Stdlib Require Import ZArith.
From Stdlib Require Import EqNat.
Extract Inlined Constant Z.add => "(Prelude.+)".
Extract Inlined Constant Z.sub => "(Prelude.-)".
Extract Inlined Constant Z.mul => "(Prelude.*)".
Extract Inlined Constant Z.max => "Prelude.max".
Extract Inlined Constant Z.min => "Prelude.min".
Extract Inlined Constant Z_ge_lt_dec => "(Prelude.>=)".
Extract Inlined Constant Z_gt_le_dec => "(Prelude.>)".
Extract Constant Z.div => "(\n m -> if m Prelude.== 0 then 0 else Prelude.div n m)".
Extract Constant Z.modulo => "(\n m -> if m Prelude.== 0 then n else Prelude.mod n m)".
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