libc/test/include/IsSubnormalTest.h

   1 //===-- Utility class to test the issubnormal macro  ------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #ifndef LLVM_LIBC_TEST_INCLUDE_MATH_ISSUBNORMAL_H
  10 #define LLVM_LIBC_TEST_INCLUDE_MATH_ISSUBNORMAL_H
  11
  12 #include "test/UnitTest/FPMatcher.h"
  13 #include "test/UnitTest/Test.h"
  14
  15 #include "include/llvm-libc-macros/math-function-macros.h"
  16
  17 template <typename T>
  18 class IsSubnormalTest : public LIBC_NAMESPACE::testing::Test {
  19   DECLARE_SPECIAL_CONSTANTS(T)
  20
  21 public:
  22   typedef bool (*IsSubnormalFunc)(T);
  23
  24   void testSpecialNumbers(IsSubnormalFunc func) {
  25     EXPECT_FALSE(func(aNaN));
  26     EXPECT_FALSE(func(neg_aNaN));
  27     EXPECT_FALSE(func(sNaN));
  28     EXPECT_FALSE(func(neg_sNaN));
  29     EXPECT_FALSE(func(inf));
  30     EXPECT_FALSE(func(neg_inf));
  31     EXPECT_FALSE(func(min_normal));
  32     EXPECT_FALSE(func(max_normal));
  33     EXPECT_FALSE(func(neg_max_normal));
  34     EXPECT_TRUE(func(min_denormal));
  35     EXPECT_TRUE(func(neg_min_denormal));
  36     EXPECT_TRUE(func(max_denormal));
  37     EXPECT_FALSE(func(zero));
  38     EXPECT_FALSE(func(neg_zero));
  39   }
  40 };
  41
  42 #define LIST_ISSUBNORMAL_TESTS(T, func)                                        \
  43   using LlvmLibcIsSubnormalTest = IsSubnormalTest<T>;                          \
  44   TEST_F(LlvmLibcIsSubnormalTest, SpecialNumbers) {                            \
  45     auto issubnormal_func = [](T x) { return func(x); };                       \
  46     testSpecialNumbers(issubnormal_func);                                      \
  47   }
  48
  49 #endif // LLVM_LIBC_TEST_INCLUDE_MATH_ISSUBNORMAL_H