forked from awslabs/aws-c-common
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathmath_test.c
176 lines (152 loc) · 10.9 KB
/
math_test.c
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
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
/*
* Copyright 2010-2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include <aws/common/math.h>
#include <aws/testing/aws_test_harness.h>
#include <stdio.h>
#define CHECK_SAT(fn, a, b, result) \
do { \
ASSERT_UINT_EQUALS( \
(result), \
fn((a), (b)), \
"%s(0x%016llx, 0x%016llx) = 0x%016llx", \
#fn, \
(unsigned long long)(a), \
(unsigned long long)(b), \
(unsigned long long)(result)); \
ASSERT_UINT_EQUALS( \
(result), \
fn((b), (a)), \
"%s(0x%016llx, 0x%016llx) = 0x%016llx", \
#fn, \
(unsigned long long)(b), \
(unsigned long long)(a), \
(unsigned long long)(result)); \
} while (0)
AWS_TEST_CASE(test_u64_saturating, s_test_u64_saturating_fn)
static int s_test_u64_saturating_fn(struct aws_allocator *allocator, void *ctx) {
(void)allocator;
(void)ctx;
CHECK_SAT(aws_mul_u64_saturating, 0, 0, 0);
CHECK_SAT(aws_mul_u64_saturating, 0, 1, 0);
CHECK_SAT(aws_mul_u64_saturating, 0, ~0LLU, 0);
CHECK_SAT(aws_mul_u64_saturating, 4, 5, 20);
CHECK_SAT(aws_mul_u64_saturating, 1234, 4321, 5332114);
CHECK_SAT(aws_mul_u64_saturating, 0xFFFFFFFF, 1, 0xFFFFFFFF);
CHECK_SAT(aws_mul_u64_saturating, 0xFFFFFFFF, 0xFFFFFFFF, 0xfffffffe00000001LLU);
CHECK_SAT(aws_mul_u64_saturating, 0x100000000, 0xFFFFFFFF, 0xFFFFFFFF00000000LLU);
CHECK_SAT(aws_mul_u64_saturating, 0x100000001, 0xFFFFFFFF, 0xFFFFFFFFFFFFFFFFLLU);
CHECK_SAT(aws_mul_u64_saturating, 0x100000001, 0xFFFFFFFE, 0xFFFFFFFEFFFFFFFELLU);
CHECK_SAT(aws_mul_u64_saturating, 0x100000002, 0xFFFFFFFE, 0xFFFFFFFFFFFFFFFCLLU);
CHECK_SAT(aws_mul_u64_saturating, 0x100000003, 0xFFFFFFFE, 0xFFFFFFFFFFFFFFFFLLU);
CHECK_SAT(aws_mul_u64_saturating, 0xFFFFFFFE, 0xFFFFFFFE, 0xFFFFFFFC00000004LLU);
CHECK_SAT(aws_mul_u64_saturating, 0x1FFFFFFFF, 0x1FFFFFFFF, 0xFFFFFFFFFFFFFFFFLLU);
CHECK_SAT(aws_mul_u64_saturating, ~0LLU, ~0LLU, ~0LLU);
return 0;
}
AWS_TEST_CASE(test_u32_saturating, s_test_u32_saturating_fn)
static int s_test_u32_saturating_fn(struct aws_allocator *allocator, void *ctx) {
(void)allocator;
(void)ctx;
CHECK_SAT(aws_mul_u32_saturating, 0, 0, 0);
CHECK_SAT(aws_mul_u32_saturating, 0, 1, 0);
CHECK_SAT(aws_mul_u32_saturating, 0, ~0U, 0);
CHECK_SAT(aws_mul_u32_saturating, 4, 5, 20);
CHECK_SAT(aws_mul_u32_saturating, 1234, 4321, 5332114);
CHECK_SAT(aws_mul_u32_saturating, 0xFFFFFFFF, 1, 0xFFFFFFFF);
CHECK_SAT(aws_mul_u32_saturating, 0xFFFF, 1, 0xFFFF);
CHECK_SAT(aws_mul_u32_saturating, 0xFFFF, 0xFFFF, 0xfffe0001);
CHECK_SAT(aws_mul_u32_saturating, 0x10000, 0xFFFF, 0xFFFF0000U);
CHECK_SAT(aws_mul_u32_saturating, 0x10001, 0xFFFF, 0xFFFFFFFFU);
CHECK_SAT(aws_mul_u32_saturating, 0x10001, 0xFFFE, 0xFFFEFFFEU);
CHECK_SAT(aws_mul_u32_saturating, 0x10002, 0xFFFE, 0xFFFFFFFCU);
CHECK_SAT(aws_mul_u32_saturating, 0x10003, 0xFFFE, 0xFFFFFFFFU);
CHECK_SAT(aws_mul_u32_saturating, 0xFFFE, 0xFFFE, 0xFFFC0004U);
CHECK_SAT(aws_mul_u32_saturating, 0x1FFFF, 0x1FFFF, 0xFFFFFFFFU);
CHECK_SAT(aws_mul_u32_saturating, ~0U, ~0U, ~0U);
return 0;
}
#define CHECK_OVF_0(fn, type, a, b) \
do { \
type result_val; \
ASSERT_FALSE(fn((a), (b), &result_val)); \
} while (0)
#define CHECK_OVF(fn, type, a, b) \
do { \
CHECK_OVF_0(fn, type, a, b); \
CHECK_OVF_0(fn, type, b, a); \
} while (0)
#define CHECK_NO_OVF_0(fn, type, a, b, r) \
do { \
type result_val; \
ASSERT_TRUE(fn((a), (b), &result_val)); \
ASSERT_INT_EQUALS( \
(uint64_t)result_val, \
(uint64_t)(r), \
"Expected %s(%016llx, %016llx) = %016llx; got %016llx", \
#fn, \
(unsigned long long)(a), \
(unsigned long long)(b), \
(unsigned long long)(r), \
(unsigned long long)(result_val)); \
} while (0)
#define CHECK_NO_OVF(fn, type, a, b, r) \
do { \
CHECK_NO_OVF_0(fn, type, a, b, r); \
CHECK_NO_OVF_0(fn, type, b, a, r); \
} while (0)
AWS_TEST_CASE(test_u64_checked, s_test_u64_checked_fn)
static int s_test_u64_checked_fn(struct aws_allocator *allocator, void *ctx) {
(void)allocator;
(void)ctx;
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 0, 0, 0);
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 0, 1, 0);
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 0, ~0LLU, 0);
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 4, 5, 20);
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 1234, 4321, 5332114);
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 0xFFFFFFFFLLU, 1LLU, 0xFFFFFFFFLLU);
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 0xFFFFFFFFLLU, 0xFFFFFFFFLLU, 0xfffffffe00000001LLU);
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 0x100000000LLU, 0xFFFFFFFFLLU, 0xFFFFFFFF00000000LLU);
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 0x100000001LLU, 0xFFFFFFFFLLU, 0xFFFFFFFFFFFFFFFFLLU);
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 0x100000001LLU, 0xFFFFFFFELLU, 0xFFFFFFFEFFFFFFFELLU);
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 0x100000002LLU, 0xFFFFFFFELLU, 0xFFFFFFFFFFFFFFFCLLU);
CHECK_OVF(aws_mul_u64_checked, uint64_t, 0x100000003LLU, 0xFFFFFFFELLU);
CHECK_NO_OVF(aws_mul_u64_checked, uint64_t, 0xFFFFFFFELLU, 0xFFFFFFFELLU, 0xFFFFFFFC00000004LLU);
CHECK_OVF(aws_mul_u64_checked, uint64_t, 0x1FFFFFFFFLLU, 0x1FFFFFFFFLLU);
CHECK_OVF(aws_mul_u64_checked, uint64_t, ~0LLU, ~0LLU);
return 0;
}
AWS_TEST_CASE(test_u32_checked, s_test_u32_checked_fn)
/* NOLINTNEXTLINE(readability-function-size) */
static int s_test_u32_checked_fn(struct aws_allocator *allocator, void *ctx) {
(void)allocator;
(void)ctx;
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 0, 0, 0);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 0, 1, 0);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 0, ~0u, 0);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 4, 5, 20);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 1234, 4321, 5332114);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 0xFFFFFFFF, 1, 0xFFFFFFFF);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 0xFFFF, 1, 0xFFFF);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 0xFFFF, 0xFFFF, 0xfffe0001u);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 0x10000, 0xFFFF, 0xFFFF0000u);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 0x10001, 0xFFFF, 0xFFFFFFFFu);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 0x10001, 0xFFFE, 0xFFFEFFFEu);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 0x10002, 0xFFFE, 0xFFFFFFFCu);
CHECK_OVF(aws_mul_u32_checked, uint32_t, 0x10003, 0xFFFE);
CHECK_NO_OVF(aws_mul_u32_checked, uint32_t, 0xFFFE, 0xFFFE, 0xFFFC0004u);
CHECK_OVF(aws_mul_u32_checked, uint32_t, 0x1FFFF, 0x1FFFF);
CHECK_OVF(aws_mul_u32_checked, uint32_t, ~0u, ~0u);
return 0;
}