chore: add more unit tests for Sub and Add

krishna2803 · krishna2803 · commit d6575f9bb959 · 2025-08-05T01:16:15.000+05:30
Signed-off-by: Krishna Pandey &lt;kpandey81930@gmail.com&gt;
diff --git a/libc/test/src/math/smoke/AddTest.h b/libc/test/src/math/smoke/AddTest.h
@@ -47,6 +47,10 @@ class AddTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {
     EXPECT_FP_EQ(neg_inf, func(in.neg_inf, in.zero));
     EXPECT_FP_EQ(inf, func(in.inf, in.neg_zero));
     EXPECT_FP_EQ(neg_inf, func(in.neg_inf, in.neg_zero));
+    EXPECT_FP_EQ(inf, func(in.zero, in.inf));
+    EXPECT_FP_EQ(inf, func(in.neg_zero, in.inf));
+    EXPECT_FP_EQ(neg_inf, func(in.zero, in.neg_inf));
+    EXPECT_FP_EQ(neg_inf, func(in.neg_zero, in.neg_inf));
   }
 
   void test_invalid_operations(AddFunc func) {
diff --git a/libc/test/src/math/smoke/SubTest.h b/libc/test/src/math/smoke/SubTest.h
@@ -48,7 +48,9 @@ class SubTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {
     EXPECT_FP_EQ(inf, func(in.inf, in.neg_zero));
     EXPECT_FP_EQ(neg_inf, func(in.neg_inf, in.neg_zero));
     EXPECT_FP_EQ(neg_inf, func(in.zero, in.inf));
+    EXPECT_FP_EQ(neg_inf, func(in.neg_zero, in.inf));
     EXPECT_FP_EQ(inf, func(in.zero, in.neg_inf));
+    EXPECT_FP_EQ(inf, func(in.neg_zero, in.neg_inf));
   }
 
   void test_invalid_operations(SubFunc func) {

Original file line number	Diff line number	Diff line change
`@@ -48,7 +48,9 @@ class SubTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {`
`48`	`48`	`EXPECT_FP_EQ(inf, func(in.inf, in.neg_zero));`
`49`	`49`	`EXPECT_FP_EQ(neg_inf, func(in.neg_inf, in.neg_zero));`
`50`	`50`	`EXPECT_FP_EQ(neg_inf, func(in.zero, in.inf));`
	`51`	`+ EXPECT_FP_EQ(neg_inf, func(in.neg_zero, in.inf));`
`51`	`52`	`EXPECT_FP_EQ(inf, func(in.zero, in.neg_inf));`
	`53`	`+ EXPECT_FP_EQ(inf, func(in.neg_zero, in.neg_inf));`
`52`	`54`	`}`
`53`	`55`
`54`	`56`	`void test_invalid_operations(SubFunc func) {`