[libc-commits] [libc] [libc][math] Implement fpclassify macro. (PR #109519)

[via libc-commits]

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@@ -0,0 +1,49 @@
+//===-- Utility class to test the fpclassify macro  -------------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_TEST_INCLUDE_MATH_FPCLASSIFY_H
+#define LLVM_LIBC_TEST_INCLUDE_MATH_FPCLASSIFY_H
+
+#include "test/UnitTest/FPMatcher.h"
+#include "test/UnitTest/Test.h"
+
+#include "include/llvm-libc-macros/math-function-macros.h"
+
+template <typename T>
+class FpClassifyTest : public LIBC_NAMESPACE::testing::Test {
+  DECLARE_SPECIAL_CONSTANTS(T)
+
+public:
+  typedef int (*FpClassifyFunc)(T);
+
+  void testSpecialNumbers(FpClassifyFunc func) {
+    EXPECT_EQ(func(aNaN), 0);
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lntue wrote:

Use `FP_*` constants instead.

https://github.com/llvm/llvm-project/pull/109519