[libc-commits] [libc] [libc][math][c23] Add acoshf16 C23 math function. (PR #130588)

[via libc-commits]

================
@@ -0,0 +1,52 @@
+//===-- Unittests for acoshf16 --------------------------------------------===//
+//
+// 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/__support/FPUtil/cast.h"
+#include "src/errno/libc_errno.h"
+#include "src/math/acoshf16.h"
+#include "test/UnitTest/FPMatcher.h"
+#include "test/UnitTest/Test.h"
+
+using LlvmLibcAcoshf16Test = LIBC_NAMESPACE::testing::FPTest<float16>;
+
+TEST_F(LlvmLibcAcoshf16Test, SpecialNumbers) {
+  LIBC_NAMESPACE::libc_errno = 0;
+  EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::acoshf16(aNaN));
+  EXPECT_MATH_ERRNO(0);
+
+  EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::acoshf16(sNaN), FE_INVALID);
+  EXPECT_MATH_ERRNO(0);
+
+  EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::acoshf16(zero), FE_INVALID);
+  EXPECT_MATH_ERRNO(EDOM);
+
+  EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::acoshf16(neg_zero));
+  EXPECT_MATH_ERRNO(EDOM);
+
+  EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::acoshf16(neg_zero),
+                              FE_INVALID);
+  EXPECT_MATH_ERRNO(EDOM);
+
+  EXPECT_FP_EQ(inf, LIBC_NAMESPACE::acoshf16(inf));
+  EXPECT_MATH_ERRNO(0);
+
+  EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::acoshf16(neg_inf));
+  EXPECT_MATH_ERRNO(EDOM);
+
+  EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::acoshf16(neg_inf),
+                              FE_INVALID);
+  EXPECT_MATH_ERRNO(EDOM);
+
+  EXPECT_FP_EQ(zero, LIBC_NAMESPACE::acoshf16(
+                         LIBC_NAMESPACE::fputil::cast<float16>(1.0)));
+  EXPECT_MATH_ERRNO(0);
+
+  EXPECT_FP_EQ(aNaN, LIBC_NAMESPACE::acoshf16(
+                         LIBC_NAMESPACE::fputil::cast<float16>(0.5)));
+  EXPECT_MATH_ERRNO(EDOM);
+}
----------------
lntue wrote:

Add some test cases for -1, -2, -3.

https://github.com/llvm/llvm-project/pull/130588