1//===-- Utility class to test roundeven[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_ROUNDEVENTEST_H
10#define LLVM_LIBC_TEST_SRC_MATH_SMOKE_ROUNDEVENTEST_H
11
12#include "test/UnitTest/FEnvSafeTest.h"
13#include "test/UnitTest/FPMatcher.h"
14#include "test/UnitTest/Test.h"
15
16#include "hdr/math_macros.h"
17
18template <typename T>
19class RoundEvenTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {
20
21 DECLARE_SPECIAL_CONSTANTS(T)
22
23public:
24 typedef T (*RoundEvenFunc)(T);
25
26 void testSpecialNumbers(RoundEvenFunc func) {
27 EXPECT_FP_EQ(zero, func(zero));
28 EXPECT_FP_EQ(neg_zero, func(neg_zero));
29
30 EXPECT_FP_EQ(inf, func(inf));
31 EXPECT_FP_EQ(neg_inf, func(neg_inf));
32
33 EXPECT_FP_EQ(aNaN, func(aNaN));
34 }
35
36 void testRoundedNumbers(RoundEvenFunc func) {
37 EXPECT_FP_EQ(T(1.0), func(T(1.0)));
38 EXPECT_FP_EQ(T(-1.0), func(T(-1.0)));
39 EXPECT_FP_EQ(T(10.0), func(T(10.0)));
40 EXPECT_FP_EQ(T(-10.0), func(T(-10.0)));
41 EXPECT_FP_EQ(T(1234.0), func(T(1234.0)));
42 EXPECT_FP_EQ(T(-1234.0), func(T(-1234.0)));
43 }
44
45 void testFractions(RoundEvenFunc func) {
46 EXPECT_FP_EQ(T(0.0), func(T(0.5)));
47 EXPECT_FP_EQ(T(-0.0), func(T(-0.5)));
48 EXPECT_FP_EQ(T(0.0), func(T(0.115)));
49 EXPECT_FP_EQ(T(-0.0), func(T(-0.115)));
50 EXPECT_FP_EQ(T(1.0), func(T(0.715)));
51 EXPECT_FP_EQ(T(-1.0), func(T(-0.715)));
52 EXPECT_FP_EQ(T(2.0), func(T(1.5)));
53 EXPECT_FP_EQ(T(-2.0), func(T(-1.5)));
54 EXPECT_FP_EQ(T(2.0), func(T(1.75)));
55 EXPECT_FP_EQ(T(-2.0), func(T(-1.75)));
56 EXPECT_FP_EQ(T(10.0), func(T(10.50)));
57 EXPECT_FP_EQ(T(-10.0), func(T(-10.50)));
58 EXPECT_FP_EQ(T(11.0), func(T(10.65)));
59 EXPECT_FP_EQ(T(-11.0), func(T(-10.65)));
60 EXPECT_FP_EQ(T(1234.0), func(T(1234.50)));
61 EXPECT_FP_EQ(T(-1234.0), func(T(-1234.50)));
62 EXPECT_FP_EQ(T(1236.0), func(T(1235.50)));
63 EXPECT_FP_EQ(T(-1236.0), func(T(-1235.50)));
64 }
65};
66
67#define LIST_ROUNDEVEN_TESTS(T, func) \
68 using LlvmLibcRoundEvenTest = RoundEvenTest<T>; \
69 TEST_F(LlvmLibcRoundEvenTest, SpecialNumbers) { testSpecialNumbers(&func); } \
70 TEST_F(LlvmLibcRoundEvenTest, RoundedNubmers) { testRoundedNumbers(&func); } \
71 TEST_F(LlvmLibcRoundEvenTest, Fractions) { testFractions(&func); }
72
73#endif // LLVM_LIBC_TEST_SRC_MATH_SMOKE_ROUNDEVENTEST_H
74

source code of libc/test/src/math/smoke/RoundEvenTest.h