[libc-commits] [libc] [libc][math] Implement double precision asin correctly rounded for all rounding modes. (PR #134401)

[via libc-commits]

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@@ -0,0 +1,50 @@
+//===-- Unittests for asin ------------------------------------------------===//
+//
+// 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 "hdr/math_macros.h"
+#include "src/math/asin.h"
+#include "test/UnitTest/FPMatcher.h"
+#include "test/UnitTest/Test.h"
+
+using LlvmLibcAsinTest = LIBC_NAMESPACE::testing::FPTest<double>;
+
+TEST_F(LlvmLibcAsinTest, SpecialNumbers) {
+  EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asin(aNaN));
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overmighty wrote:

```suggestion
  EXPECT_FP_EQ_WITH_EXCEPTION_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asin(sNaN), FE_INVALID);
  EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asin(aNaN));
```

https://github.com/llvm/llvm-project/pull/134401