diff options
Diffstat (limited to 'plugins/extraction/ExtrHaskellZNum.v')
| -rw-r--r-- | plugins/extraction/ExtrHaskellZNum.v | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/plugins/extraction/ExtrHaskellZNum.v b/plugins/extraction/ExtrHaskellZNum.v new file mode 100644 index 0000000000..3f645db9b1 --- /dev/null +++ b/plugins/extraction/ExtrHaskellZNum.v @@ -0,0 +1,19 @@ +(** + * 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]. + *) + +Require Import ZArith. +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.div => "Prelude.div". +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.>)". |