Add tests to Support/MathExtras
In r271380, I added several functions to get the minimum/maximum values
of n-width integers.
This just adds tests for them.
llvm-svn: 271505
diff --git a/llvm/unittests/Support/MathExtrasTest.cpp b/llvm/unittests/Support/MathExtrasTest.cpp
index 042f640..04e1662 100644
--- a/llvm/unittests/Support/MathExtrasTest.cpp
+++ b/llvm/unittests/Support/MathExtrasTest.cpp
@@ -106,6 +106,35 @@
EXPECT_EQ(5u, findLastSet(NZ64));
}
+TEST(MathExtras, isIntN) {
+ EXPECT_TRUE(isIntN(16, 32767));
+ EXPECT_FALSE(isIntN(16, 32768));
+}
+
+TEST(MathExtras, isUIntN) {
+ EXPECT_TRUE(isUIntN(16, 65535));
+ EXPECT_FALSE(isUIntN(16, 65536));
+ EXPECT_TRUE(isUIntN(1, 0));
+ EXPECT_TRUE(isUIntN(6, 63));
+}
+
+TEST(MathExtras, maxIntN) {
+ EXPECT_EQ(32767, maxIntN(16));
+ EXPECT_EQ(2147483647, maxIntN(32));
+}
+
+TEST(MathExtras, minIntN) {
+ EXPECT_EQ(-32768LL, minIntN(16));
+ EXPECT_EQ(-64LL, minIntN(7));
+}
+
+TEST(MathExtras, maxUIntN) {
+ EXPECT_EQ(0xffffULL, maxUIntN(16));
+ EXPECT_EQ(0xffffffffULL, maxUIntN(32));
+ EXPECT_EQ(1ULL, maxUIntN(1));
+ EXPECT_EQ(0x0fULL, maxUIntN(4));
+}
+
TEST(MathExtras, reverseBits) {
uint8_t NZ8 = 42;
uint16_t NZ16 = 42;