1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
//===-- Unittests for stdbit ----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDSList-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "test/UnitTest/Test.h"
/*
* The intent of this test is validate that:
* 1. We provide the definition of the various type generic macros of stdbit.h
* (the macros are transitively included from stdbit-macros.h by stdbit.h).
* 2. It dispatches to the correct underlying function.
* Because unit tests build without public packaging, the object files produced
* do not contain non-namespaced symbols.
*/
/*
* Declare these BEFORE including stdbit-macros.h so that this test may still be
* run even if a given target doesn't yet have these individual entrypoints
* enabled.
*/
#include "stdbit_stub.h"
#include "include/llvm-libc-macros/stdbit-macros.h"
TEST(LlvmLibcStdbitTest, TypeGenericMacroLeadingZeros) {
EXPECT_EQ(stdc_leading_zeros(static_cast<unsigned char>(0U)), 0xAAU);
EXPECT_EQ(stdc_leading_zeros(static_cast<unsigned short>(0U)), 0xABU);
EXPECT_EQ(stdc_leading_zeros(0U), 0xACU);
EXPECT_EQ(stdc_leading_zeros(0UL), 0xADU);
EXPECT_EQ(stdc_leading_zeros(0ULL), 0xAEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroLeadingOnes) {
EXPECT_EQ(stdc_leading_ones(static_cast<unsigned char>(0U)), 0xBAU);
EXPECT_EQ(stdc_leading_ones(static_cast<unsigned short>(0U)), 0xBBU);
EXPECT_EQ(stdc_leading_ones(0U), 0xBCU);
EXPECT_EQ(stdc_leading_ones(0UL), 0xBDU);
EXPECT_EQ(stdc_leading_ones(0ULL), 0xBEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroTrailingZeros) {
EXPECT_EQ(stdc_trailing_zeros(static_cast<unsigned char>(0U)), 0xCAU);
EXPECT_EQ(stdc_trailing_zeros(static_cast<unsigned short>(0U)), 0xCBU);
EXPECT_EQ(stdc_trailing_zeros(0U), 0xCCU);
EXPECT_EQ(stdc_trailing_zeros(0UL), 0xCDU);
EXPECT_EQ(stdc_trailing_zeros(0ULL), 0xCEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroTrailingOnes) {
EXPECT_EQ(stdc_trailing_ones(static_cast<unsigned char>(0U)), 0xDAU);
EXPECT_EQ(stdc_trailing_ones(static_cast<unsigned short>(0U)), 0xDBU);
EXPECT_EQ(stdc_trailing_ones(0U), 0xDCU);
EXPECT_EQ(stdc_trailing_ones(0UL), 0xDDU);
EXPECT_EQ(stdc_trailing_ones(0ULL), 0xDEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroFirstLeadingZero) {
EXPECT_EQ(stdc_first_leading_zero(static_cast<unsigned char>(0U)), 0xEAU);
EXPECT_EQ(stdc_first_leading_zero(static_cast<unsigned short>(0U)), 0xEBU);
EXPECT_EQ(stdc_first_leading_zero(0U), 0xECU);
EXPECT_EQ(stdc_first_leading_zero(0UL), 0xEDU);
EXPECT_EQ(stdc_first_leading_zero(0ULL), 0xEEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroFirstLeadingOne) {
EXPECT_EQ(stdc_first_leading_one(static_cast<unsigned char>(0U)), 0xFAU);
EXPECT_EQ(stdc_first_leading_one(static_cast<unsigned short>(0U)), 0xFBU);
EXPECT_EQ(stdc_first_leading_one(0U), 0xFCU);
EXPECT_EQ(stdc_first_leading_one(0UL), 0xFDU);
EXPECT_EQ(stdc_first_leading_one(0ULL), 0xFEU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroFirstTrailingZero) {
EXPECT_EQ(stdc_first_trailing_zero(static_cast<unsigned char>(0U)), 0x0AU);
EXPECT_EQ(stdc_first_trailing_zero(static_cast<unsigned short>(0U)), 0x0BU);
EXPECT_EQ(stdc_first_trailing_zero(0U), 0x0CU);
EXPECT_EQ(stdc_first_trailing_zero(0UL), 0x0DU);
EXPECT_EQ(stdc_first_trailing_zero(0ULL), 0x0EU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroFirstTrailingOne) {
EXPECT_EQ(stdc_first_trailing_one(static_cast<unsigned char>(0U)), 0x1AU);
EXPECT_EQ(stdc_first_trailing_one(static_cast<unsigned short>(0U)), 0x1BU);
EXPECT_EQ(stdc_first_trailing_one(0U), 0x1CU);
EXPECT_EQ(stdc_first_trailing_one(0UL), 0x1DU);
EXPECT_EQ(stdc_first_trailing_one(0ULL), 0x1EU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroCountZeros) {
EXPECT_EQ(stdc_count_zeros(static_cast<unsigned char>(0U)), 0x2AU);
EXPECT_EQ(stdc_count_zeros(static_cast<unsigned short>(0U)), 0x2BU);
EXPECT_EQ(stdc_count_zeros(0U), 0x2CU);
EXPECT_EQ(stdc_count_zeros(0UL), 0x2DU);
EXPECT_EQ(stdc_count_zeros(0ULL), 0x2EU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroCountOnes) {
EXPECT_EQ(stdc_count_ones(static_cast<unsigned char>(0U)), 0x3AU);
EXPECT_EQ(stdc_count_ones(static_cast<unsigned short>(0U)), 0x3BU);
EXPECT_EQ(stdc_count_ones(0U), 0x3CU);
EXPECT_EQ(stdc_count_ones(0UL), 0x3DU);
EXPECT_EQ(stdc_count_ones(0ULL), 0x3EU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroHasSingleBit) {
EXPECT_EQ(stdc_has_single_bit(static_cast<unsigned char>(1U)), false);
EXPECT_EQ(stdc_has_single_bit(static_cast<unsigned short>(1U)), false);
EXPECT_EQ(stdc_has_single_bit(1U), false);
EXPECT_EQ(stdc_has_single_bit(1UL), false);
EXPECT_EQ(stdc_has_single_bit(1ULL), false);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroBitWidth) {
EXPECT_EQ(stdc_bit_width(static_cast<unsigned char>(1U)), 0x4AU);
EXPECT_EQ(stdc_bit_width(static_cast<unsigned short>(1U)), 0x4BU);
EXPECT_EQ(stdc_bit_width(1U), 0x4CU);
EXPECT_EQ(stdc_bit_width(1UL), 0x4DU);
EXPECT_EQ(stdc_bit_width(1ULL), 0x4EU);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroBitFloor) {
EXPECT_EQ(stdc_bit_floor(static_cast<unsigned char>(0U)),
static_cast<unsigned char>(0x5AU));
EXPECT_EQ(stdc_bit_floor(static_cast<unsigned short>(0U)),
static_cast<unsigned short>(0x5BU));
EXPECT_EQ(stdc_bit_floor(0U), 0x5CU);
EXPECT_EQ(stdc_bit_floor(0UL), 0x5DUL);
EXPECT_EQ(stdc_bit_floor(0ULL), 0x5EULL);
}
TEST(LlvmLibcStdbitTest, TypeGenericMacroBitCeil) {
EXPECT_EQ(stdc_bit_ceil(static_cast<unsigned char>(0U)),
static_cast<unsigned char>(0x6AU));
EXPECT_EQ(stdc_bit_ceil(static_cast<unsigned short>(0U)),
static_cast<unsigned short>(0x6BU));
EXPECT_EQ(stdc_bit_ceil(0U), 0x6CU);
EXPECT_EQ(stdc_bit_ceil(0UL), 0x6DUL);
EXPECT_EQ(stdc_bit_ceil(0ULL), 0x6EULL);
}
TEST(LlvmLibcStdbitTest, VersionMacro) {
// 7.18.1p2 an integer constant expression with a value equivalent to 202311L.
EXPECT_EQ(__STDC_VERSION_STDBIT_H__, 202311L);
}
TEST(LlvmLibcStdbitTest, EndianMacros) {
// 7.18.2p3 The values of the integer constant expressions for
// __STDC_ENDIAN_LITTLE__ and __STDC_ENDIAN_BIG__ are not equal.
EXPECT_NE(__STDC_ENDIAN_LITTLE__, __STDC_ENDIAN_BIG__);
// The standard does allow for __STDC_ENDIAN_NATIVE__ to be an integer
// constant expression with an implementation defined value for non-big or
// little endianness environments. I assert such machines are no longer
// relevant.
EXPECT_TRUE(__STDC_ENDIAN_NATIVE__ == __STDC_ENDIAN_LITTLE__ ||
__STDC_ENDIAN_NATIVE__ == __STDC_ENDIAN_BIG__);
}
|
