tests/conv.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2020 Gerhard Sittig <gerhard.sittig@gmx.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <config.h>
  21 #include <check.h>
  22 #include <libsigrok/libsigrok.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include "lib.h"
  26 #include "libsigrok-internal.h"
  27
  28 static const uint8_t buff1234[] = {
  29         0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88,
  30 };
  31 static const uint8_t buff8125fb[] = {
  32         0x41, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  33 };
  34 static const uint8_t buff8125fl[] = {
  35         0x00, 0x00, 0x02, 0x41, 0x00, 0x00, 0x00, 0x00,
  36 };
  37 static const uint8_t buff1234large[] = {
  38         0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
  39         0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
  40         0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
  41         0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
  42         0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
  43         0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
  44         0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38,
  45         0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40,
  46 };
  47
  48 START_TEST(test_endian_macro)
  49 {
  50         const uint8_t *p8;
  51         const uint16_t *p16;
  52         const uint32_t *p32;
  53
  54         p8 = (const void *)&buff1234[0];
  55         fail_unless(R8(&p8[0]) == 0x11);
  56         fail_unless(R8(&p8[1]) == 0x22);
  57         fail_unless(R8(&p8[2]) == 0x33);
  58         fail_unless(R8(&p8[3]) == 0x44);
  59
  60         p16 = (const void *)&buff1234[0];
  61         fail_unless(RB16(&p16[0]) == 0x1122);
  62         fail_unless(RB16(&p16[1]) == 0x3344);
  63
  64         p16 = (const void *)&buff1234[0];
  65         fail_unless(RL16(&p16[0]) == 0x2211);
  66         fail_unless(RL16(&p16[1]) == 0x4433);
  67
  68         p32 = (const void *)&buff1234[0];
  69         fail_unless(RB32(&p32[0]) == 0x11223344);
  70         fail_unless(RB32(&p32[1]) == 0x55667788);
  71
  72         p32 = (const void *)&buff1234[0];
  73         fail_unless(RL32(&p32[0]) == 0x44332211);
  74         fail_unless(RL32(&p32[1]) == 0x88776655);
  75
  76         p16 = (const void *)&buff1234[0];
  77         fail_unless(RB16(p16++) == 0x1122);
  78         fail_unless(RB16(p16++) == 0x3344);
  79 }
  80 END_TEST
  81
  82 START_TEST(test_endian_read)
  83 {
  84         fail_unless(read_u8(&buff1234[0]) == 0x11);
  85         fail_unless(read_u8(&buff1234[3]) == 0x44);
  86         fail_unless(read_u8(&buff1234[7]) == 0x88);
  87
  88         fail_unless(read_u16be(&buff1234[0]) == 0x1122);
  89         fail_unless(read_u16be(&buff1234[6]) == 0x7788);
  90
  91         fail_unless(read_u16le(&buff1234[0]) == 0x2211);
  92         fail_unless(read_u16le(&buff1234[6]) == 0x8877);
  93
  94         fail_unless(read_i16be(&buff1234[6]) == 0x7788);
  95         fail_unless(read_i16le(&buff1234[6]) == (int16_t)0x8877);
  96
  97         fail_unless(read_u32be(&buff1234[0]) == 0x11223344);
  98         fail_unless(read_u32be(&buff1234[4]) == 0x55667788);
  99
 100         fail_unless(read_u32le(&buff1234[0]) == 0x44332211);
 101         fail_unless(read_u32le(&buff1234[4]) == 0x88776655);
 102
 103         fail_unless(read_i32be(&buff1234[0]) == 0x11223344);
 104         fail_unless(read_i32be(&buff1234[4]) == 0x55667788);
 105         fail_unless(read_i32le(&buff1234[4]) == (int32_t)0x88776655ull);
 106
 107         fail_unless(read_u64be(&buff1234[0]) == 0x1122334455667788ull);
 108         fail_unless(read_u64le(&buff1234[0]) == 0x8877665544332211ull);
 109         fail_unless(read_i64be(&buff1234[0]) == 0x1122334455667788ull);
 110         fail_unless(read_i64le(&buff1234[0]) == (int64_t)0x8877665544332211ull);
 111
 112         fail_unless(read_fltbe(&buff8125fb[0]) == 8.125);
 113         fail_unless(read_fltle(&buff8125fl[0]) == 8.125);
 114 }
 115 END_TEST
 116
 117 START_TEST(test_endian_read_inc)
 118 {
 119         const uint8_t *p;
 120
 121         p = &buff1234[0];
 122         fail_unless(read_u8_inc(&p) == 0x11);
 123         fail_unless(read_u8_inc(&p) == 0x22);
 124         fail_unless(read_u8_inc(&p) == 0x33);
 125         fail_unless(p == &buff1234[3 * sizeof(uint8_t)]);
 126
 127         p = &buff1234[0];
 128         fail_unless(read_u16be_inc(&p) == 0x1122);
 129         fail_unless(read_u16be_inc(&p) == 0x3344);
 130         fail_unless(p == &buff1234[2 * sizeof(uint16_t)]);
 131
 132         p = &buff1234[0];
 133         fail_unless(read_u16le_inc(&p) == 0x2211);
 134         fail_unless(read_u16le_inc(&p) == 0x4433);
 135         fail_unless(p == &buff1234[2 * sizeof(uint16_t)]);
 136
 137         p = &buff1234[0];
 138         fail_unless(read_u24le_inc(&p) == 0x332211);
 139         fail_unless(read_u24le_inc(&p) == 0x665544);
 140         fail_unless(p == &buff1234[2 * 3 * sizeof(uint8_t)]);
 141
 142         p = &buff1234[0];
 143         fail_unless(read_u32be_inc(&p) == 0x11223344ul);
 144         fail_unless(read_u32be_inc(&p) == 0x55667788ul);
 145         fail_unless(p == &buff1234[2 * sizeof(uint32_t)]);
 146
 147         p = &buff1234[0];
 148         fail_unless(read_u32le_inc(&p) == 0x44332211ul);
 149         fail_unless(read_u32le_inc(&p) == 0x88776655ul);
 150         fail_unless(p == &buff1234[2 * sizeof(uint32_t)]);
 151
 152         p = &buff1234[0];
 153         fail_unless(read_u64be_inc(&p) == 0x1122334455667788);
 154         fail_unless(p == &buff1234[sizeof(uint64_t)]);
 155
 156         p = &buff1234[0];
 157         fail_unless(read_u64le_inc(&p) == 0x8877665544332211ull);
 158         fail_unless(p == &buff1234[sizeof(uint64_t)]);
 159 }
 160 END_TEST
 161
 162 START_TEST(test_endian_write)
 163 {
 164         uint8_t buff[2 * sizeof(uint64_t)];
 165
 166         memset(buff, 0, sizeof(buff));
 167         write_u8(&buff[0], 0x11);
 168         fail_unless(memcmp(&buff[0], &buff1234[0], sizeof(uint8_t)) == 0);
 169
 170         memset(buff, 0, sizeof(buff));
 171         write_u8(&buff[0], 0x22);
 172         write_u8(&buff[1], 0x33);
 173         write_u8(&buff[2], 0x44);
 174         write_u8(&buff[3], 0x55);
 175         fail_unless(memcmp(&buff[0], &buff1234[1], 4 * sizeof(uint8_t)) == 0);
 176
 177         memset(buff, 0, sizeof(buff));
 178         write_u16be(&buff[0 * sizeof(uint16_t)], 0x1122);
 179         write_u16be(&buff[1 * sizeof(uint16_t)], 0x3344);
 180         fail_unless(memcmp(&buff[0], &buff1234[0], 2 * sizeof(uint16_t)) == 0);
 181
 182         memset(buff, 0, sizeof(buff));
 183         write_u16le(&buff[0 * sizeof(uint16_t)], 0x4433);
 184         write_u16le(&buff[1 * sizeof(uint16_t)], 0x6655);
 185         fail_unless(memcmp(&buff[0], &buff1234[2], 2 * sizeof(uint16_t)) == 0);
 186
 187         memset(buff, 0, sizeof(buff));
 188         write_u32be(&buff[0 * sizeof(uint32_t)], 0x11223344);
 189         write_u32be(&buff[1 * sizeof(uint32_t)], 0x55667788);
 190         fail_unless(memcmp(&buff[0], &buff1234[0], 2 * sizeof(uint32_t)) == 0);
 191
 192         memset(buff, 0, sizeof(buff));
 193         write_u32le(&buff[0 * sizeof(uint32_t)], 0x44332211);
 194         write_u32le(&buff[1 * sizeof(uint32_t)], 0x88776655);
 195         fail_unless(memcmp(&buff[0], &buff1234[0], 2 * sizeof(uint32_t)) == 0);
 196
 197         memset(buff, 0, sizeof(buff));
 198         write_fltbe(&buff[0], 8.125);
 199         fail_unless(memcmp(&buff[0], &buff8125fb[0], sizeof(float)) == 0);
 200
 201         memset(buff, 0, sizeof(buff));
 202         write_fltle(&buff[0], 8.125);
 203         fail_unless(memcmp(&buff[0], &buff8125fl[0], sizeof(float)) == 0);
 204 }
 205 END_TEST
 206
 207 START_TEST(test_endian_write_inc)
 208 {
 209         uint8_t buff[3 * sizeof(uint64_t)];
 210         uint8_t *p;
 211         size_t l;
 212
 213         memset(buff, 0, sizeof(buff));
 214
 215         p = &buff[0];
 216         write_u8_inc(&p, 0x11);
 217         write_u16be_inc(&p, 0x2233);
 218         write_u32be_inc(&p, 0x44556677);
 219         l = p - &buff[0];
 220         fail_unless(l == sizeof(uint8_t) + sizeof(uint16_t) + sizeof(uint32_t));
 221         fail_unless(memcmp(&buff[0], &buff1234[0], l) == 0);
 222
 223         p = &buff[0];
 224         write_u48le_inc(&p, 0x060504030201);
 225         write_u48le_inc(&p, 0x0c0b0a090807);
 226         write_u48le_inc(&p, 0x1211100f0e0d);
 227         write_u48le_inc(&p, 0x181716151413);
 228         l = p - &buff[0];
 229         fail_unless(l == 4 * 48 / 8 * sizeof(uint8_t));
 230         fail_unless(memcmp(&buff[0], &buff1234large[0], l) == 0);
 231
 232         p = &buff[0];
 233         write_u24le_inc(&p, 0xfe030201);
 234         write_u40le_inc(&p, 0xdcba0807060504ul);
 235         l = p - &buff[0];
 236         fail_unless(l == 24 / 8 + 40 / 8);
 237         fail_unless(memcmp(&buff[0], &buff1234large[0], l) == 0);
 238 }
 239 END_TEST
 240
 241 Suite *suite_conv(void)
 242 {
 243         Suite *s;
 244         TCase *tc;
 245
 246         s = suite_create("conv");
 247
 248         tc = tcase_create("endian");
 249         tcase_add_test(tc, test_endian_macro);
 250         tcase_add_test(tc, test_endian_read);
 251         tcase_add_test(tc, test_endian_read_inc);
 252         tcase_add_test(tc, test_endian_write);
 253         tcase_add_test(tc, test_endian_write_inc);
 254         suite_add_tcase(s, tc);
 255
 256         return s;
 257 }