libc/test/include/IsZeroTest.h

   1 //===-- Utility class to test the iszero 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_ISZERO_H
  10 #define LLVM_LIBC_TEST_INCLUDE_MATH_ISZERO_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> class IsZeroTest : public LIBC_NAMESPACE::testing::Test {
  18   DECLARE_SPECIAL_CONSTANTS(T)
  19
  20 public:
  21   typedef bool (*IsZeroFunc)(T);
  22
  23   void testSpecialNumbers(IsZeroFunc func) {
  24     EXPECT_FALSE(func(inf));
  25     EXPECT_FALSE(func(neg_inf));
  26     EXPECT_TRUE(func(zero));
  27     EXPECT_TRUE(func(neg_zero));
  28   }
  29 };
  30
  31 #define LIST_ISZERO_TESTS(T, func)                                             \
  32   using LlvmLibcIsZeroTest = IsZeroTest<T>;                                    \
  33   TEST_F(LlvmLibcIsZeroTest, SpecialNumbers) {                                 \
  34     auto iszero_func = [](T x) { return func(x); };                            \
  35     testSpecialNumbers(iszero_func);                                           \
  36   }
  37
  38 #endif // LLVM_LIBC_TEST_INCLUDE_MATH_ISZERO_H