diff options
Diffstat (limited to 'src/Data.hs')
| -rw-r--r-- | src/Data.hs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/Data.hs b/src/Data.hs index 1304a5f..60afdd0 100644 --- a/src/Data.hs +++ b/src/Data.hs @@ -101,6 +101,10 @@ type family n + m where Z + m = m S n + m = S (n + m) +type family n - m where + n - Z = n + S n - S m = n - m + snatAdd :: SNat n -> SNat m -> SNat (n + m) snatAdd SZ m = m snatAdd (SS n) m = SS (snatAdd n m) |