| Norman James | 6a58a27 | 2015-10-07 14:34:16 -0500 | [diff] [blame] | 1 | #include <ccan/endian/endian.h>
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| 2 | #include <stdlib.h>
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| 3 | #include <stddef.h>
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| 4 | #include <ccan/tap/tap.h>
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| 5 |
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| 6 | int main(int argc, char *argv[])
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| 7 | {
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| 8 | union {
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| 9 | uint64_t u64;
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| 10 | unsigned char u64_bytes[8];
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| 11 | } u64;
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| 12 | union {
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| 13 | uint32_t u32;
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| 14 | unsigned char u32_bytes[4];
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| 15 | } u32;
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| 16 | union {
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| 17 | uint16_t u16;
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| 18 | unsigned char u16_bytes[2];
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| 19 | } u16;
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| 20 |
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| 21 | plan_tests(48);
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| 22 |
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| 23 | /* Straight swap tests. */
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| 24 | u64.u64_bytes[0] = 0x00;
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| 25 | u64.u64_bytes[1] = 0x11;
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| 26 | u64.u64_bytes[2] = 0x22;
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| 27 | u64.u64_bytes[3] = 0x33;
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| 28 | u64.u64_bytes[4] = 0x44;
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| 29 | u64.u64_bytes[5] = 0x55;
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| 30 | u64.u64_bytes[6] = 0x66;
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| 31 | u64.u64_bytes[7] = 0x77;
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| 32 | u64.u64 = bswap_64(u64.u64);
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| 33 | ok1(u64.u64_bytes[7] == 0x00);
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| 34 | ok1(u64.u64_bytes[6] == 0x11);
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| 35 | ok1(u64.u64_bytes[5] == 0x22);
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| 36 | ok1(u64.u64_bytes[4] == 0x33);
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| 37 | ok1(u64.u64_bytes[3] == 0x44);
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| 38 | ok1(u64.u64_bytes[2] == 0x55);
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| 39 | ok1(u64.u64_bytes[1] == 0x66);
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| 40 | ok1(u64.u64_bytes[0] == 0x77);
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| 41 |
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| 42 | u32.u32_bytes[0] = 0x00;
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| 43 | u32.u32_bytes[1] = 0x11;
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| 44 | u32.u32_bytes[2] = 0x22;
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| 45 | u32.u32_bytes[3] = 0x33;
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| 46 | u32.u32 = bswap_32(u32.u32);
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| 47 | ok1(u32.u32_bytes[3] == 0x00);
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| 48 | ok1(u32.u32_bytes[2] == 0x11);
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| 49 | ok1(u32.u32_bytes[1] == 0x22);
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| 50 | ok1(u32.u32_bytes[0] == 0x33);
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| 51 |
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| 52 | u16.u16_bytes[0] = 0x00;
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| 53 | u16.u16_bytes[1] = 0x11;
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| 54 | u16.u16 = bswap_16(u16.u16);
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| 55 | ok1(u16.u16_bytes[1] == 0x00);
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| 56 | ok1(u16.u16_bytes[0] == 0x11);
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| 57 |
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| 58 | /* Endian tests. */
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| 59 | u64.u64 = cpu_to_le64(0x0011223344556677ULL);
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| 60 | ok1(u64.u64_bytes[0] == 0x77);
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| 61 | ok1(u64.u64_bytes[1] == 0x66);
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| 62 | ok1(u64.u64_bytes[2] == 0x55);
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| 63 | ok1(u64.u64_bytes[3] == 0x44);
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| 64 | ok1(u64.u64_bytes[4] == 0x33);
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| 65 | ok1(u64.u64_bytes[5] == 0x22);
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| 66 | ok1(u64.u64_bytes[6] == 0x11);
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| 67 | ok1(u64.u64_bytes[7] == 0x00);
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| 68 | ok1(le64_to_cpu(u64.u64) == 0x0011223344556677ULL);
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| 69 |
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| 70 | u64.u64 = cpu_to_be64(0x0011223344556677ULL);
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| 71 | ok1(u64.u64_bytes[7] == 0x77);
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| 72 | ok1(u64.u64_bytes[6] == 0x66);
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| 73 | ok1(u64.u64_bytes[5] == 0x55);
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| 74 | ok1(u64.u64_bytes[4] == 0x44);
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| 75 | ok1(u64.u64_bytes[3] == 0x33);
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| 76 | ok1(u64.u64_bytes[2] == 0x22);
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| 77 | ok1(u64.u64_bytes[1] == 0x11);
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| 78 | ok1(u64.u64_bytes[0] == 0x00);
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| 79 | ok1(be64_to_cpu(u64.u64) == 0x0011223344556677ULL);
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| 80 |
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| 81 | u32.u32 = cpu_to_le32(0x00112233);
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| 82 | ok1(u32.u32_bytes[0] == 0x33);
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| 83 | ok1(u32.u32_bytes[1] == 0x22);
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| 84 | ok1(u32.u32_bytes[2] == 0x11);
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| 85 | ok1(u32.u32_bytes[3] == 0x00);
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| 86 | ok1(le32_to_cpu(u32.u32) == 0x00112233);
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| 87 |
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| 88 | u32.u32 = cpu_to_be32(0x00112233);
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| 89 | ok1(u32.u32_bytes[3] == 0x33);
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| 90 | ok1(u32.u32_bytes[2] == 0x22);
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| 91 | ok1(u32.u32_bytes[1] == 0x11);
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| 92 | ok1(u32.u32_bytes[0] == 0x00);
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| 93 | ok1(be32_to_cpu(u32.u32) == 0x00112233);
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| 94 |
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| 95 | u16.u16 = cpu_to_le16(0x0011);
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| 96 | ok1(u16.u16_bytes[0] == 0x11);
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| 97 | ok1(u16.u16_bytes[1] == 0x00);
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| 98 | ok1(le16_to_cpu(u16.u16) == 0x0011);
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| 99 |
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| 100 | u16.u16 = cpu_to_be16(0x0011);
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| 101 | ok1(u16.u16_bytes[1] == 0x11);
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| 102 | ok1(u16.u16_bytes[0] == 0x00);
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| 103 | ok1(be16_to_cpu(u16.u16) == 0x0011);
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| 104 |
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| 105 | exit(exit_status());
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| 106 | }
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