Ackermann function example added.

2 files changed, 26 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..378eac2
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+build
diff --git a/examples/ackermann.c b/examples/ackermann.c
new file mode 100644
index 0000000..08acd4d
--- /dev/null
+++ b/examples/ackermann.c
@@ -0,0 +1,25 @@
+#include <csxbind.h>
+#include <stdio.h>
+
+
+int main()
+{
+    init();
+    char *m = N("m");
+    char *n = N("n");
+    char *ackermann = N("ackermann");
+    printf("%d\n", *(int *)R(L(_do,
+      L(set, ackermann, L(fn, L(m, n, 0),
+        L(_if,
+          L(same, m, I(0), 0), L(_plus, n, I(1), 0),
+          L(same, n, I(0), 0), L(ackermann, L(_plus, m, I(-1), 0), I(1), 0),
+          L(ackermann,
+            L(_plus, m, I(-1), 0),
+            L(ackermann, m, L(_plus, n, I(-1), 0), 0),
+          0),
+        0),
+      0), 0),
+      L(ackermann, I(3), I(7), 0),
+    0)));
+    return 0;
+}