1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 Copyright 2014 Tom Gundersen
6 #include "sparse-endian.h"
10 static uint8_t data[] = {
11 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
12 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
15 static void test_be(void) {
18 assert_se(unaligned_read_be16(&data[0]) == 0x0001);
19 assert_se(unaligned_read_be16(&data[1]) == 0x0102);
21 assert_se(unaligned_read_be32(&data[0]) == 0x00010203);
22 assert_se(unaligned_read_be32(&data[1]) == 0x01020304);
23 assert_se(unaligned_read_be32(&data[2]) == 0x02030405);
24 assert_se(unaligned_read_be32(&data[3]) == 0x03040506);
26 assert_se(unaligned_read_be64(&data[0]) == 0x0001020304050607);
27 assert_se(unaligned_read_be64(&data[1]) == 0x0102030405060708);
28 assert_se(unaligned_read_be64(&data[2]) == 0x0203040506070809);
29 assert_se(unaligned_read_be64(&data[3]) == 0x030405060708090a);
30 assert_se(unaligned_read_be64(&data[4]) == 0x0405060708090a0b);
31 assert_se(unaligned_read_be64(&data[5]) == 0x05060708090a0b0c);
32 assert_se(unaligned_read_be64(&data[6]) == 0x060708090a0b0c0d);
33 assert_se(unaligned_read_be64(&data[7]) == 0x0708090a0b0c0d0e);
36 unaligned_write_be16(&scratch[0], 0x0001);
37 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint16_t)) == 0);
39 unaligned_write_be16(&scratch[1], 0x0102);
40 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint16_t)) == 0);
43 unaligned_write_be32(&scratch[0], 0x00010203);
44 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint32_t)) == 0);
46 unaligned_write_be32(&scratch[1], 0x01020304);
47 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint32_t)) == 0);
49 unaligned_write_be32(&scratch[2], 0x02030405);
50 assert_se(memcmp(&scratch[2], &data[2], sizeof(uint32_t)) == 0);
52 unaligned_write_be32(&scratch[3], 0x03040506);
53 assert_se(memcmp(&scratch[3], &data[3], sizeof(uint32_t)) == 0);
56 unaligned_write_be64(&scratch[0], 0x0001020304050607);
57 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint64_t)) == 0);
59 unaligned_write_be64(&scratch[1], 0x0102030405060708);
60 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint64_t)) == 0);
62 unaligned_write_be64(&scratch[2], 0x0203040506070809);
63 assert_se(memcmp(&scratch[2], &data[2], sizeof(uint64_t)) == 0);
65 unaligned_write_be64(&scratch[3], 0x030405060708090a);
66 assert_se(memcmp(&scratch[3], &data[3], sizeof(uint64_t)) == 0);
68 unaligned_write_be64(&scratch[4], 0x0405060708090a0b);
69 assert_se(memcmp(&scratch[4], &data[4], sizeof(uint64_t)) == 0);
71 unaligned_write_be64(&scratch[5], 0x05060708090a0b0c);
72 assert_se(memcmp(&scratch[5], &data[5], sizeof(uint64_t)) == 0);
74 unaligned_write_be64(&scratch[6], 0x060708090a0b0c0d);
75 assert_se(memcmp(&scratch[6], &data[6], sizeof(uint64_t)) == 0);
77 unaligned_write_be64(&scratch[7], 0x0708090a0b0c0d0e);
78 assert_se(memcmp(&scratch[7], &data[7], sizeof(uint64_t)) == 0);
81 static void test_le(void) {
84 assert_se(unaligned_read_le16(&data[0]) == 0x0100);
85 assert_se(unaligned_read_le16(&data[1]) == 0x0201);
87 assert_se(unaligned_read_le32(&data[0]) == 0x03020100);
88 assert_se(unaligned_read_le32(&data[1]) == 0x04030201);
89 assert_se(unaligned_read_le32(&data[2]) == 0x05040302);
90 assert_se(unaligned_read_le32(&data[3]) == 0x06050403);
92 assert_se(unaligned_read_le64(&data[0]) == 0x0706050403020100);
93 assert_se(unaligned_read_le64(&data[1]) == 0x0807060504030201);
94 assert_se(unaligned_read_le64(&data[2]) == 0x0908070605040302);
95 assert_se(unaligned_read_le64(&data[3]) == 0x0a09080706050403);
96 assert_se(unaligned_read_le64(&data[4]) == 0x0b0a090807060504);
97 assert_se(unaligned_read_le64(&data[5]) == 0x0c0b0a0908070605);
98 assert_se(unaligned_read_le64(&data[6]) == 0x0d0c0b0a09080706);
99 assert_se(unaligned_read_le64(&data[7]) == 0x0e0d0c0b0a090807);
102 unaligned_write_le16(&scratch[0], 0x0100);
103 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint16_t)) == 0);
105 unaligned_write_le16(&scratch[1], 0x0201);
106 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint16_t)) == 0);
109 unaligned_write_le32(&scratch[0], 0x03020100);
111 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint32_t)) == 0);
113 unaligned_write_le32(&scratch[1], 0x04030201);
114 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint32_t)) == 0);
116 unaligned_write_le32(&scratch[2], 0x05040302);
117 assert_se(memcmp(&scratch[2], &data[2], sizeof(uint32_t)) == 0);
119 unaligned_write_le32(&scratch[3], 0x06050403);
120 assert_se(memcmp(&scratch[3], &data[3], sizeof(uint32_t)) == 0);
123 unaligned_write_le64(&scratch[0], 0x0706050403020100);
124 assert_se(memcmp(&scratch[0], &data[0], sizeof(uint64_t)) == 0);
126 unaligned_write_le64(&scratch[1], 0x0807060504030201);
127 assert_se(memcmp(&scratch[1], &data[1], sizeof(uint64_t)) == 0);
129 unaligned_write_le64(&scratch[2], 0x0908070605040302);
130 assert_se(memcmp(&scratch[2], &data[2], sizeof(uint64_t)) == 0);
132 unaligned_write_le64(&scratch[3], 0x0a09080706050403);
133 assert_se(memcmp(&scratch[3], &data[3], sizeof(uint64_t)) == 0);
135 unaligned_write_le64(&scratch[4], 0x0B0A090807060504);
136 assert_se(memcmp(&scratch[4], &data[4], sizeof(uint64_t)) == 0);
138 unaligned_write_le64(&scratch[5], 0x0c0b0a0908070605);
139 assert_se(memcmp(&scratch[5], &data[5], sizeof(uint64_t)) == 0);
141 unaligned_write_le64(&scratch[6], 0x0d0c0b0a09080706);
142 assert_se(memcmp(&scratch[6], &data[6], sizeof(uint64_t)) == 0);
144 unaligned_write_le64(&scratch[7], 0x0e0d0c0b0a090807);
145 assert_se(memcmp(&scratch[7], &data[7], sizeof(uint64_t)) == 0);
148 static void test_ne(void) {
151 uint64_t z = 9876543210;
153 /* Note that we don't bother actually testing alignment issues in this function, after all the _ne() functions
154 * are just aliases for the _le() or _be() implementations, which we test extensively above. Hence, in this
155 * function, just ensure that they map to the right version on the local architecture. */
157 assert_se(unaligned_read_ne16(&x) == 4711);
158 assert_se(unaligned_read_ne32(&y) == 123456);
159 assert_se(unaligned_read_ne64(&z) == 9876543210);
161 unaligned_write_ne16(&x, 1);
162 unaligned_write_ne32(&y, 2);
163 unaligned_write_ne64(&z, 3);
170 int main(int argc, const char *argv[]) {