1 files changed, 14 insertions, 0 deletions
diff --git a/CSAPP/tmul.c b/CSAPP/tmul.c
new file mode 100644
index 0000000..687221a
--- /dev/null
+++ b/CSAPP/tmul.c
@@ -0,0 +1,14 @@
+int tmul_ok_asm(long x, long y, long *dest )
+{
+	long r = x*y;
+	*dest = r;
+	return r > 0;
+}
+
+int umul_ok_asm(unsigned long x, unsigned long y, unsigned long *dest)
+{
+	unsigned long	r = x*y;
+
+	*dest = r;
+	return r > 0;
+}