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111
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1 /* { dg-do run } */
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2 /* { dg-require-effective-target stdint_types } */
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3 /* { dg-options "-Wall" } */
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4
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5 #include <stdint.h>
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6
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7 #define MAKE_FUN(suffix, type) \
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8 type my_bswap##suffix(type x) { \
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9 type result = 0; \
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10 int shift; \
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11 for (shift = 0; shift < 8 * sizeof (type); shift += 8) \
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12 { \
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13 result <<= 8; \
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14 result |= (x >> shift) & 0xff; \
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15 } \
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16 return result; \
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17 } \
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18
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19 MAKE_FUN(16, uint16_t);
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20 MAKE_FUN(32, uint32_t);
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21 MAKE_FUN(64, uint64_t);
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22
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23 extern void abort (void);
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24
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25 #define NUMS16 \
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26 { \
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27 0x0000, \
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28 0x1122, \
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29 0xffff, \
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30 }
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31
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32 #define NUMS32 \
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33 { \
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34 0x00000000UL, \
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35 0x11223344UL, \
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36 0xffffffffUL, \
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37 }
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38
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39 #define NUMS64 \
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40 { \
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41 0x0000000000000000ULL, \
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42 0x1122334455667788ULL, \
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43 0xffffffffffffffffULL, \
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44 }
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45
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46 uint16_t uint16_ts[] =
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47 NUMS16;
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48
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49 uint32_t uint32_ts[] =
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50 NUMS32;
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51
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52 uint64_t uint64_ts[] =
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53 NUMS64;
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54
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55 #define N(table) (sizeof (table) / sizeof (table[0]))
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56
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57 int
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58 main (void)
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59 {
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60 int i;
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61
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62 for (i = 0; i < N(uint16_ts); i++)
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63 if (__builtin_bswap16 (uint16_ts[i]) != my_bswap16 (uint16_ts[i]))
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64 abort ();
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65
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66 for (i = 0; i < N(uint32_ts); i++)
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67 if (__builtin_bswap32 (uint32_ts[i]) != my_bswap32 (uint32_ts[i]))
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68 abort ();
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69
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70 for (i = 0; i < N(uint64_ts); i++)
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71 if (__builtin_bswap64 (uint64_ts[i]) != my_bswap64 (uint64_ts[i]))
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72 abort ();
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73
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74 return 0;
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75 }
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