1//===-- Utility class to test ceil[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#include "test/UnitTest/FEnvSafeTest.h"
10#include "test/UnitTest/FPMatcher.h"
11#include "test/UnitTest/Test.h"
12#include "utils/MPFRWrapper/MPFRUtils.h"
13
14#include "hdr/math_macros.h"
15
16namespace mpfr = LIBC_NAMESPACE::testing::mpfr;
17
18template <typename T>
19class CeilTest : public LIBC_NAMESPACE::testing::FEnvSafeTest {
20
21 DECLARE_SPECIAL_CONSTANTS(T)
22
23public:
24 typedef T (*CeilFunc)(T);
25
26 void testSpecialNumbers(CeilFunc 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(CeilFunc 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(CeilFunc func) {
46 EXPECT_FP_EQ(T(1.0), func(T(0.5)));
47 EXPECT_FP_EQ(T(-0.0), func(T(-0.5)));
48 EXPECT_FP_EQ(T(1.0), 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(-0.0), func(T(-0.715)));
52 EXPECT_FP_EQ(T(2.0), func(T(1.3)));
53 EXPECT_FP_EQ(T(-1.0), func(T(-1.3)));
54 EXPECT_FP_EQ(T(2.0), func(T(1.5)));
55 EXPECT_FP_EQ(T(-1.0), func(T(-1.5)));
56 EXPECT_FP_EQ(T(2.0), func(T(1.75)));
57 EXPECT_FP_EQ(T(-1.0), func(T(-1.75)));
58 EXPECT_FP_EQ(T(11.0), func(T(10.32)));
59 EXPECT_FP_EQ(T(-10.0), func(T(-10.32)));
60 EXPECT_FP_EQ(T(11.0), func(T(10.65)));
61 EXPECT_FP_EQ(T(-10.0), func(T(-10.65)));
62 EXPECT_FP_EQ(T(1235.0), func(T(1234.38)));
63 EXPECT_FP_EQ(T(-1234.0), func(T(-1234.38)));
64 EXPECT_FP_EQ(T(1235.0), func(T(1234.96)));
65 EXPECT_FP_EQ(T(-1234.0), func(T(-1234.96)));
66 }
67
68 void testRange(CeilFunc func) {
69 constexpr StorageType COUNT = 100'000;
70 constexpr StorageType STEP = STORAGE_MAX / COUNT;
71 for (StorageType i = 0, v = 0; i <= COUNT; ++i, v += STEP) {
72 T x = FPBits(v).get_val();
73 if (isnan(x) || isinf(x))
74 continue;
75
76 ASSERT_MPFR_MATCH(mpfr::Operation::Ceil, x, func(x), 0.0);
77 }
78 }
79};
80
81#define LIST_CEIL_TESTS(T, func) \
82 using LlvmLibcCeilTest = CeilTest<T>; \
83 TEST_F(LlvmLibcCeilTest, SpecialNumbers) { testSpecialNumbers(&func); } \
84 TEST_F(LlvmLibcCeilTest, RoundedNubmers) { testRoundedNumbers(&func); } \
85 TEST_F(LlvmLibcCeilTest, Fractions) { testFractions(&func); } \
86 TEST_F(LlvmLibcCeilTest, Range) { testRange(&func); }
87

source code of libc/test/src/math/CeilTest.h