1 | //===-- Utility class to test fminimum_num[f|l] -----------------*- 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_SRC_MATH_SMOKE_FMINIMUMNUMTEST_H |
10 | #define LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMINIMUMNUMTEST_H |
11 | |
12 | #include "src/__support/CPP/algorithm.h" |
13 | #include "src/__support/FPUtil/FPBits.h" |
14 | #include "test/UnitTest/FEnvSafeTest.h" |
15 | #include "test/UnitTest/FPMatcher.h" |
16 | #include "test/UnitTest/Test.h" |
17 | |
18 | template <typename T> |
19 | class FMinimumNumTest : public LIBC_NAMESPACE::testing::FEnvSafeTest { |
20 | |
21 | DECLARE_SPECIAL_CONSTANTS(T) |
22 | |
23 | public: |
24 | typedef T (*FMinimumNumFunc)(T, T); |
25 | |
26 | void testNaN(FMinimumNumFunc func) { |
27 | EXPECT_FP_EQ(inf, func(aNaN, inf)); |
28 | EXPECT_FP_EQ_WITH_EXCEPTION(inf, func(sNaN, inf), FE_INVALID); |
29 | EXPECT_FP_EQ(neg_inf, func(neg_inf, aNaN)); |
30 | EXPECT_FP_EQ_WITH_EXCEPTION(neg_inf, func(neg_inf, sNaN), FE_INVALID); |
31 | EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(aNaN, aNaN)).uintval()); |
32 | EXPECT_FP_EQ(zero, func(aNaN, zero)); |
33 | EXPECT_FP_EQ(neg_zero, func(neg_zero, aNaN)); |
34 | EXPECT_FP_EQ_WITH_EXCEPTION(zero, func(sNaN, zero), FE_INVALID); |
35 | EXPECT_FP_EQ_WITH_EXCEPTION(neg_zero, func(neg_zero, sNaN), FE_INVALID); |
36 | EXPECT_FP_EQ(T(-1.2345), func(aNaN, T(-1.2345))); |
37 | EXPECT_FP_EQ(T(1.2345), func(T(1.2345), aNaN)); |
38 | EXPECT_FP_EQ_WITH_EXCEPTION(T(-1.2345), func(sNaN, T(-1.2345)), FE_INVALID); |
39 | EXPECT_FP_EQ_WITH_EXCEPTION(T(1.2345), func(T(1.2345), sNaN), FE_INVALID); |
40 | EXPECT_FP_IS_NAN_WITH_EXCEPTION(func(aNaN, sNaN), FE_INVALID); |
41 | EXPECT_FP_IS_NAN_WITH_EXCEPTION(func(sNaN, aNaN), FE_INVALID); |
42 | EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(aNaN, sNaN)).uintval()); |
43 | EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(sNaN, aNaN)).uintval()); |
44 | EXPECT_EQ(FPBits(aNaN).uintval(), FPBits(func(sNaN, sNaN)).uintval()); |
45 | } |
46 | |
47 | void testInfArg(FMinimumNumFunc func) { |
48 | EXPECT_FP_EQ(neg_inf, func(neg_inf, inf)); |
49 | EXPECT_FP_EQ(zero, func(inf, zero)); |
50 | EXPECT_FP_EQ(neg_zero, func(neg_zero, inf)); |
51 | EXPECT_FP_EQ(T(1.2345), func(inf, T(1.2345))); |
52 | EXPECT_FP_EQ(T(-1.2345), func(T(-1.2345), inf)); |
53 | } |
54 | |
55 | void testNegInfArg(FMinimumNumFunc func) { |
56 | EXPECT_FP_EQ(neg_inf, func(inf, neg_inf)); |
57 | EXPECT_FP_EQ(neg_inf, func(neg_inf, zero)); |
58 | EXPECT_FP_EQ(neg_inf, func(neg_zero, neg_inf)); |
59 | EXPECT_FP_EQ(neg_inf, func(neg_inf, T(-1.2345))); |
60 | EXPECT_FP_EQ(neg_inf, func(T(1.2345), neg_inf)); |
61 | } |
62 | |
63 | void testBothZero(FMinimumNumFunc func) { |
64 | EXPECT_FP_EQ(zero, func(zero, zero)); |
65 | EXPECT_FP_EQ(neg_zero, func(neg_zero, zero)); |
66 | EXPECT_FP_EQ(neg_zero, func(zero, neg_zero)); |
67 | EXPECT_FP_EQ(neg_zero, func(neg_zero, neg_zero)); |
68 | } |
69 | |
70 | void testRange(FMinimumNumFunc func) { |
71 | constexpr int COUNT = 100'001; |
72 | constexpr StorageType STEP = LIBC_NAMESPACE::cpp::max( |
73 | static_cast<StorageType>(STORAGE_MAX / COUNT), StorageType(1)); |
74 | StorageType v = 0, w = STORAGE_MAX; |
75 | for (int i = 0; i <= COUNT; ++i, v += STEP, w -= STEP) { |
76 | FPBits xbits(v), ybits(w); |
77 | if (xbits.is_inf_or_nan()) |
78 | continue; |
79 | if (ybits.is_inf_or_nan()) |
80 | continue; |
81 | T x = xbits.get_val(); |
82 | T y = ybits.get_val(); |
83 | if ((x == 0) && (y == 0)) |
84 | continue; |
85 | |
86 | if (x > y) |
87 | EXPECT_FP_EQ(y, func(x, y)); |
88 | else |
89 | EXPECT_FP_EQ(x, func(x, y)); |
90 | } |
91 | } |
92 | }; |
93 | |
94 | #define LIST_FMINIMUM_NUM_TESTS(T, func) \ |
95 | using LlvmLibcFMinimumNumTest = FMinimumNumTest<T>; \ |
96 | TEST_F(LlvmLibcFMinimumNumTest, NaN) { testNaN(&func); } \ |
97 | TEST_F(LlvmLibcFMinimumNumTest, InfArg) { testInfArg(&func); } \ |
98 | TEST_F(LlvmLibcFMinimumNumTest, NegInfArg) { testNegInfArg(&func); } \ |
99 | TEST_F(LlvmLibcFMinimumNumTest, BothZero) { testBothZero(&func); } \ |
100 | TEST_F(LlvmLibcFMinimumNumTest, Range) { testRange(&func); } |
101 | |
102 | #endif // LLVM_LIBC_TEST_SRC_MATH_SMOKE_FMINIMUMNUMTEST_H |
103 | |