contrib/libjeffpc/test_bswap.c

   1 /*
   2  * Copyright (c) 2016 Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #include <jeffpc/int.h>
  24 #include <jeffpc/types.h>
  25
  26 #include "test.c"
  27
  28 struct run {
  29         uint64_t in;
  30         uint8_t out8;
  31         uint16_t out16;
  32         uint32_t out32;
  33         uint64_t out64;
  34 };
  35
  36 static const struct run runs[] = {
  37         {
  38                 .in     = 0,
  39                 .out8   = 0,
  40                 .out16  = 0,
  41                 .out32  = 0,
  42                 .out64  = 0,
  43         },
  44         {
  45                 .in     = 0xffffffffffffffff,
  46                 .out8   = 0xff,
  47                 .out16  = 0xffff,
  48                 .out32  = 0xffffffff,
  49                 .out64  = 0xffffffffffffffff,
  50         },
  51         {
  52                 .in     = 0x123456789abcdef0,
  53                 .out8   = 0xf0,
  54                 .out16  = 0xf0de,
  55                 .out32  = 0xf0debc9a,
  56                 .out64  = 0xf0debc9a78563412,
  57         },
  58         {
  59                 .in     = 0x8080808080808080,
  60                 .out8   = 0x80,
  61                 .out16  = 0x8080,
  62                 .out32  = 0x80808080,
  63                 .out64  = 0x8080808080808080,
  64         },
  65 };
  66
  67 #define CHECK(iter, size, fmt, in, exp)                                 \
  68         do {                                                            \
  69                 uint##size##_t got = bswap_##size(in);                  \
  70                                                                         \
  71                 fprintf(stderr, "%d: expected: %#"fmt"\n", iter, exp);  \
  72                 fprintf(stderr, "%d: got:      %#"fmt"\n", iter, got);  \
  73                                                                         \
  74                 if (got != exp)                                         \
  75                         fail("mismatch!");                              \
  76         } while (0)
  77
  78 static void __test(int iter, const struct run *run)
  79 {
  80         fprintf(stderr, "%d: input:    %#"PRIx64"\n", iter, run->in);
  81         CHECK(iter, 8, PRIx8, run->in & 0xff, run->out8);
  82         CHECK(iter, 16, PRIx16, run->in & 0xffff, run->out16);
  83         CHECK(iter, 32, PRIx32, run->in & 0xffffffff, run->out32);
  84         CHECK(iter, 64, PRIx64, run->in, run->out64);
  85         fprintf(stderr, "%d: ok.\n", iter);
  86 }
  87
  88 void test(void)
  89 {
  90         int i;
  91
  92         for (i = 0; i < ARRAY_LEN(runs) ; i++)
  93                 __test(i, &runs[i]);
  94 }