add test log2_approx.boundaries

2024-10-02 13:30:16 +02:00
parent d6f9bcd1cc
commit 28656a1adf
1 changed files with 9 additions and 0 deletions
@@ -16,6 +16,15 @@ TEST(log2_approx, complete)
    EXPECT_EQ(log2_approx(i), log2_approx_ref(i));
 }

+TEST(log2_approx, boundaries)
+{
+  for (int i = 0; i < 32; i++) {
+    uint32_t i2 = std::pow(2.0, i + 0.5);
+    EXPECT_EQ(log2_approx(i2), i) << "log2(" << i2 << ")";
+    EXPECT_EQ(log2_approx(i2 + 1), i + 1) << "log2(" << i2 + 1 << ")";
+  }
+}
+
 TEST(log2_approx64, boundaries)
 {
  for (int i = 0; i < 64; i++) {