Extend examples

3 files changed, 11 insertions, 3 deletions

diff --git a/examples/fac.fusp b/examples/fac.fusp
index 38643d5..666967f 100644
--- a/examples/fac.fusp
+++ b/examples/fac.fusp
@@ -1,7 +1,7 @@
 mul a b = code mul a b;
-sub a b = code sub a b;
+sub a b = code sub b a;
 
 fac 0 = 1;
-fac n = mul n (fac (sub 1 n));
+fac n = mul n (fac (sub n 1));
 
-main = fac 5;
+main = fac 4;
diff --git a/examples/int.fusp b/examples/int.fusp
index fe1e32d..b6ed1ac 100644
--- a/examples/int.fusp
+++ b/examples/int.fusp
@@ -8,3 +8,6 @@ gt a b = code gt a b;
 le a b = code le a b;
 lt a b = code lt a b;
 ne a b = code ne a b;
+
+pow _ 0 = 1;
+pow x n = mul x (pow x (sub 1 n));
diff --git a/examples/list.fusp b/examples/list.fusp
index b3f4ea5..340eb6d 100644
--- a/examples/list.fusp
+++ b/examples/list.fusp
@@ -33,3 +33,8 @@ map f [x:xs] = [f x:map f xs];
 take _ []     = [];
 take 0 _      = [];
 take n [x:xs] = [x:take (sub 1 n) xs];
+
+scan op r []    = [r];
+scan op r [a:x] = [r:scan op (op r a) x];
+
+iterate f x = [x:iterate f (f x)];