add new minic test

1 files changed, 33 insertions, 0 deletions

diff --git a/minic/test/collatz.c b/minic/test/collatz.c
new file mode 100644
index 0000000..1d8a96c
--- /dev/null
+++ b/minic/test/collatz.c
@@ -0,0 +1,33 @@
+void *malloc();
+
+main()
+{
+	int n;
+	int nv;
+	int c;
+	int cmax;
+	int *mem;
+
+	mem = malloc(sizeof(int) * 4000);
+
+	cmax = 0;
+	for (nv = 1; nv < 1000; nv++) {
+		n = nv;
+		c = 0;
+		while (n != 1) {
+			if (n < nv) {
+				c = c + mem[n];
+				break;
+			}
+			if (n & 1)
+				n = 3*n + 1;
+			else
+				n = n / 2;
+			c++;
+		}
+		mem[nv] = c;
+		if (c > cmax)
+			cmax = c;
+	}
+	printf("should print 178: %d\n", cmax);
+}