1 | #include <byteswap.h> |
2 | #include <endian.h> |
3 | #include <inttypes.h> |
4 | #include <stdio.h> |
5 | #include <stdint.h> |
6 | #include <libc-diag.h> |
7 | |
8 | #if __GNUC_PREREQ (6, 0) |
9 | /* GCC 6.0 warns on big endian systems about: |
10 | htobeXX (beXXtoh (i)) != i |
11 | warning: self-comparison always evaluates to false [-Wtautological-compare] |
12 | because htobeXX(x) and beXXtoh(x) is defined to (x) |
13 | in string/endian.h on big endian systems. |
14 | The same applies to htoleXX/leXXtoh on little endian systems. */ |
15 | # define DIAG_IGNORE_NEEDS_COMMENT_TAUTOLOGICAL_COMPARE() \ |
16 | DIAG_IGNORE_NEEDS_COMMENT (6, "-Wtautological-compare") |
17 | #else |
18 | # define () |
19 | #endif |
20 | |
21 | int |
22 | do_test (void) |
23 | { |
24 | int result = 0; |
25 | |
26 | for (uint64_t i = 0; i < (~UINT64_C (0)) >> 2; i = (i << 1) + 3) |
27 | { |
28 | if (i < UINT64_C (65536)) |
29 | { |
30 | DIAG_PUSH_NEEDS_COMMENT; |
31 | DIAG_IGNORE_NEEDS_COMMENT_TAUTOLOGICAL_COMPARE (); |
32 | if (htobe16 (be16toh (i)) != i) |
33 | { |
34 | printf (format: "htobe16 (be16toh (%" PRIx64 ")) == %" PRIx16 "\n" , |
35 | i, (uint16_t) htobe16 (be16toh (i))); |
36 | result = 1; |
37 | } |
38 | if (htole16 (le16toh (i)) != i) |
39 | { |
40 | printf (format: "htole16 (le16toh (%" PRIx64 ")) == %" PRIx16 "\n" , |
41 | i, (uint16_t) htole16 (le16toh (i))); |
42 | result = 1; |
43 | } |
44 | DIAG_POP_NEEDS_COMMENT; |
45 | |
46 | uint16_t n[2]; |
47 | n[__BYTE_ORDER == __LITTLE_ENDIAN] = bswap_16 (i); |
48 | n[__BYTE_ORDER == __BIG_ENDIAN] = i; |
49 | if (htole16 (i) != n[0]) |
50 | { |
51 | printf (format: "htole16 (%" PRIx64 ") == %" PRIx16 " != %" PRIx16 "\n" , |
52 | i, (uint16_t) htole16 (i), n[0]); |
53 | result = 1; |
54 | } |
55 | if (htobe16 (i) != n[1]) |
56 | { |
57 | printf (format: "htobe16 (%" PRIx64 ") == %" PRIx16 " != %" PRIx16 "\n" , |
58 | i, (uint16_t) htobe16 (i), n[1]); |
59 | result = 1; |
60 | } |
61 | } |
62 | |
63 | if (i < UINT64_C (4294967296)) |
64 | { |
65 | DIAG_PUSH_NEEDS_COMMENT; |
66 | DIAG_IGNORE_NEEDS_COMMENT_TAUTOLOGICAL_COMPARE (); |
67 | if (htobe32 (be32toh (i)) != i) |
68 | { |
69 | printf (format: "htobe32 (be32toh (%" PRIx64 ")) == %" PRIx32 "\n" , |
70 | i, (uint32_t) htobe32 (be32toh (i))); |
71 | result = 1; |
72 | } |
73 | if (htole32 (le32toh (i)) != i) |
74 | { |
75 | printf (format: "htole32 (le32toh (%" PRIx64 ")) == %" PRIx32 "\n" , |
76 | i, (uint32_t) htole32 (le32toh (i))); |
77 | result = 1; |
78 | } |
79 | DIAG_POP_NEEDS_COMMENT; |
80 | |
81 | uint32_t n[2]; |
82 | n[__BYTE_ORDER == __LITTLE_ENDIAN] = bswap_32 (i); |
83 | n[__BYTE_ORDER == __BIG_ENDIAN] = i; |
84 | if (htole32 (i) != n[0]) |
85 | { |
86 | printf (format: "htole32 (%" PRIx64 ") == %" PRIx32 " != %" PRIx32 "\n" , |
87 | i, (uint32_t) htole32 (i), n[0]); |
88 | result = 1; |
89 | } |
90 | if (htobe32 (i) != n[1]) |
91 | { |
92 | printf (format: "htobe32 (%" PRIx64 ") == %" PRIx32 " != %" PRIx32 "\n" , |
93 | i, (uint32_t) htobe32 (i), n[1]); |
94 | result = 1; |
95 | } |
96 | } |
97 | |
98 | DIAG_PUSH_NEEDS_COMMENT; |
99 | DIAG_IGNORE_NEEDS_COMMENT_TAUTOLOGICAL_COMPARE (); |
100 | if (htobe64 (be64toh (i)) != i) |
101 | { |
102 | printf (format: "htobe64 (be64toh (%" PRIx64 ")) == %" PRIx64 "\n" , |
103 | i, htobe64 (be64toh (i))); |
104 | result = 1; |
105 | } |
106 | if (htole64 (le64toh (i)) != i) |
107 | { |
108 | printf (format: "htole64 (le64toh (%" PRIx64 ")) == %" PRIx64 "\n" , |
109 | i, htole64 (le64toh (i))); |
110 | result = 1; |
111 | } |
112 | DIAG_POP_NEEDS_COMMENT; |
113 | |
114 | uint64_t n[2]; |
115 | n[__BYTE_ORDER == __LITTLE_ENDIAN] = bswap_64 (i); |
116 | n[__BYTE_ORDER == __BIG_ENDIAN] = i; |
117 | if (htole64 (i) != n[0]) |
118 | { |
119 | printf (format: "htole64 (%" PRIx64 ") == %" PRIx64 " != %" PRIx64 "\n" , |
120 | i, htole64 (i), n[0]); |
121 | result = 1; |
122 | } |
123 | if (htobe64 (i) != n[1]) |
124 | { |
125 | printf (format: "htobe64 (%" PRIx64 ") == %" PRIx64 " != %" PRIx64 "\n" , |
126 | i, htobe64 (i), n[1]); |
127 | result = 1; |
128 | } |
129 | } |
130 | |
131 | return result; |
132 | } |
133 | |
134 | #include <support/test-driver.c> |
135 | |