1 files changed, 40 insertions, 0 deletions
diff --git a/src/test/test_intarith.cc b/src/test/test_intarith.cc
new file mode 100644
index 000000000..4457b9399
--- /dev/null
+++ b/src/test/test_intarith.cc
@@ -0,0 +1,40 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include <climits>
+#include <gtest/gtest.h>
+#include "include/intarith.h"
+
+TEST(intarith, cbits) {
+  ASSERT_EQ(0u, cbits(0));
+  ASSERT_EQ(1u, cbits(1));
+  ASSERT_EQ(2u, cbits(2));
+  ASSERT_EQ(2u, cbits(3));
+  ASSERT_EQ(3u, cbits(4));
+  ASSERT_EQ(0u, cbits(0));
+  ASSERT_EQ(1u, cbits(1));
+  ASSERT_EQ(2u, cbits(2));
+  ASSERT_EQ(2u, cbits(3));
+  ASSERT_EQ(3u, cbits(4));
+  ASSERT_EQ(9u, cbits(0x100));
+  ASSERT_EQ(32u, cbits(0xffffffff));
+  ASSERT_EQ(32u, cbits(0xffffffff));
+  ASSERT_EQ(32u, cbits(0xffffffff));
+  ASSERT_EQ(64u, cbits(0xffffffffffffffff));
+}
+
+TEST(intarith, p2family) {
+  ASSERT_EQ(1024, p2align(1200, 1024));
+  ASSERT_EQ(1024, p2align(1024, 1024));
+  ASSERT_EQ(0x1200, p2align(0x1234, 0x100));
+  ASSERT_EQ(0x5600, p2align(0x5600, 0x100));
+
+  ASSERT_EQ(0x34, p2phase(0x1234, 0x100));
+  ASSERT_EQ(0x00, p2phase(0x5600, 0x100));
+
+  ASSERT_EQ(0xcc, p2nphase(0x1234, 0x100));
+  ASSERT_EQ(0x00, p2nphase(0x5600, 0x100));
+
+  ASSERT_EQ(0x1300, p2roundup(0x1234, 0x100));
+  ASSERT_EQ(0x5600, p2roundup(0x5600, 0x100));
+}