1 files changed, 26 insertions, 0 deletions
diff --git a/libc/test/src/math/smoke/sin_test.cpp b/libc/test/src/math/smoke/sin_test.cpp
new file mode 100644
index 0000000..16ced68
--- /dev/null
+++ b/libc/test/src/math/smoke/sin_test.cpp
@@ -0,0 +1,26 @@
+//===-- Unittests for sin -------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/sin.h"
+#include "test/UnitTest/FPMatcher.h"
+#include "test/UnitTest/Test.h"
+
+using LlvmLibcSinTest = LIBC_NAMESPACE::testing::FPTest<double>;
+
+using LIBC_NAMESPACE::testing::tlog;
+
+TEST_F(LlvmLibcSinTest, SpecialNumbers) {
+  EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::sin(aNaN));
+  EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::sin(inf));
+  EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::sin(neg_inf));
+  EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::sin(zero));
+  EXPECT_FP_EQ_ALL_ROUNDING(neg_zero, LIBC_NAMESPACE::sin(neg_zero));
+  EXPECT_FP_EQ(0x1.0p-50, LIBC_NAMESPACE::sin(0x1.0p-50));
+  EXPECT_FP_EQ(min_normal, LIBC_NAMESPACE::sin(min_normal));
+  EXPECT_FP_EQ(min_denormal, LIBC_NAMESPACE::sin(min_denormal));
+}