libc/test/include/FpClassifyTest.h

   1 //===-- Utility class to test the fpclassify 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_FPCLASSIFY_H
  10 #define LLVM_LIBC_TEST_INCLUDE_MATH_FPCLASSIFY_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 FpClassifyTest : public LIBC_NAMESPACE::testing::Test {
  19   DECLARE_SPECIAL_CONSTANTS(T)
  20
  21 public:
  22   typedef int (*FpClassifyFunc)(T);
  23
  24   void testSpecialNumbers(FpClassifyFunc func) {
  25     EXPECT_EQ(func(aNaN), FP_NAN);
  26     EXPECT_EQ(func(neg_aNaN), FP_NAN);
  27     EXPECT_EQ(func(sNaN), FP_NAN);
  28     EXPECT_EQ(func(neg_sNaN), FP_NAN);
  29     EXPECT_EQ(func(inf), FP_INFINITE);
  30     EXPECT_EQ(func(neg_inf), FP_INFINITE);
  31     EXPECT_EQ(func(min_normal), FP_NORMAL);
  32     EXPECT_EQ(func(max_normal), FP_NORMAL);
  33     EXPECT_EQ(func(neg_max_normal), FP_NORMAL);
  34     EXPECT_EQ(func(min_denormal), FP_SUBNORMAL);
  35     EXPECT_EQ(func(neg_min_denormal), FP_SUBNORMAL);
  36     EXPECT_EQ(func(max_denormal), FP_SUBNORMAL);
  37     EXPECT_EQ(func(zero), FP_ZERO);
  38     EXPECT_EQ(func(neg_zero), FP_ZERO);
  39   }
  40 };
  41
  42 #define LIST_FPCLASSIFY_TESTS(T, func)                                         \
  43   using LlvmLibcFpClassifyTest = FpClassifyTest<T>;                            \
  44   TEST_F(LlvmLibcFpClassifyTest, SpecialNumbers) {                             \
  45     auto fpclassify_func = [](T x) { return func(x); };                        \
  46     testSpecialNumbers(fpclassify_func);                                       \
  47   }
  48
  49 #endif // LLVM_LIBC_TEST_INCLUDE_MATH_FPCLASSIFY_H