1 /* $NetBSD: t_bitstring.c,v 1.4 2012/03/25 06:54:04 joerg Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 2008, 2010 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <assert.h> 30 #include <bitstring.h> 31 #include <stdio.h> 32 #include <stdlib.h> 33 34 #include <atf-c.h> 35 36 static void 37 clearbits(bitstr_t *b, int n) 38 { 39 int i = bitstr_size(n); 40 41 while(i--) 42 *(b + i) = 0; 43 } 44 45 static void 46 printbits(FILE *file, bitstr_t *b, int n) 47 { 48 int i; 49 int jc, js; 50 51 bit_ffc(b, n, &jc); 52 bit_ffs(b, n, &js); 53 54 (void) fprintf(file, "%3d %3d ", jc, js); 55 56 for (i=0; i < n; i++) { 57 (void) fprintf(file, "%c", (bit_test(b, i) ? '1' : '0')); 58 } 59 60 (void) fprintf(file, "%c", '\n'); 61 } 62 63 static void 64 calculate_data(FILE *file, const int test_length) 65 { 66 int i; 67 bitstr_t *bs; 68 69 assert(test_length >= 4); 70 71 (void) fprintf(file, "Testing with TEST_LENGTH = %d\n\n", test_length); 72 73 (void) fprintf(file, "test _bit_byte, _bit_mask, and bitstr_size\n"); 74 (void) fprintf(file, " i _bit_byte(i) _bit_mask(i) bitstr_size(i)\n"); 75 76 for (i=0; i < test_length; i++) { 77 (void) fprintf(file, "%3d%15u%15u%15zu\n", 78 i, _bit_byte(i), _bit_mask(i), bitstr_size(i)); 79 } 80 81 bs = bit_alloc(test_length); 82 clearbits(bs, test_length); 83 (void) fprintf(file, "\ntest bit_alloc, clearbits, bit_ffc, bit_ffs\n"); 84 (void) fprintf(file, "be: 0 -1 "); 85 for (i=0; i < test_length; i++) 86 (void) fprintf(file, "%c", '0'); 87 (void) fprintf(file, "\nis: "); 88 printbits(file, bs, test_length); 89 90 (void) fprintf(file, "\ntest bit_set\n"); 91 for (i=0; i < test_length; i+=3) 92 bit_set(bs, i); 93 (void) fprintf(file, "be: 1 0 "); 94 for (i=0; i < test_length; i++) 95 (void) fprintf(file, "%c", "100"[i % 3]); 96 (void) fprintf(file, "\nis: "); 97 printbits(file, bs, test_length); 98 99 (void) fprintf(file, "\ntest bit_clear\n"); 100 for (i=0; i < test_length; i+=6) 101 bit_clear(bs, i); 102 (void) fprintf(file, "be: 0 3 "); 103 for (i=0; i < test_length; i++) 104 (void) fprintf(file, "%c", "000100"[i % 6]); 105 (void) fprintf(file, "\nis: "); 106 printbits(file, bs, test_length); 107 108 (void) fprintf(file, "\ntest bit_test using previous bitstring\n"); 109 (void) fprintf(file, " i bit_test(i)\n"); 110 for (i=0; i < test_length; i++) 111 (void) fprintf(file, "%3d%15d\n", i, bit_test(bs, i)); 112 113 clearbits(bs, test_length); 114 (void) fprintf(file, "\ntest clearbits\n"); 115 (void) fprintf(file, "be: 0 -1 "); 116 for (i=0; i < test_length; i++) 117 (void) fprintf(file, "%c", '0'); 118 (void) fprintf(file, "\nis: "); 119 printbits(file, bs, test_length); 120 121 (void) fprintf(file, "\ntest bit_nset and bit_nclear\n"); 122 bit_nset(bs, 1, test_length - 2); 123 (void) fprintf(file, "be: 0 1 0"); 124 for (i=0; i < test_length - 2; i++) 125 (void) fprintf(file, "%c", '1'); 126 (void) fprintf(file, "0\nis: "); 127 printbits(file, bs, test_length); 128 129 bit_nclear(bs, 2, test_length - 3); 130 (void) fprintf(file, "be: 0 1 01"); 131 for (i=0; i < test_length - 4; i++) 132 (void) fprintf(file, "%c", '0'); 133 (void) fprintf(file, "10\nis: "); 134 printbits(file, bs, test_length); 135 136 bit_nclear(bs, 0, test_length - 1); 137 (void) fprintf(file, "be: 0 -1 "); 138 for (i=0; i < test_length; i++) 139 (void) fprintf(file, "%c", '0'); 140 (void) fprintf(file, "\nis: "); 141 printbits(file, bs, test_length); 142 bit_nset(bs, 0, test_length - 2); 143 (void) fprintf(file, "be: %3d 0 ",test_length - 1); 144 for (i=0; i < test_length - 1; i++) 145 (void) fprintf(file, "%c", '1'); 146 fprintf(file, "%c", '0'); 147 (void) fprintf(file, "\nis: "); 148 printbits(file, bs, test_length); 149 bit_nclear(bs, 0, test_length - 1); 150 (void) fprintf(file, "be: 0 -1 "); 151 for (i=0; i < test_length; i++) 152 (void) fprintf(file, "%c", '0'); 153 (void) fprintf(file, "\nis: "); 154 printbits(file, bs, test_length); 155 156 (void) fprintf(file, "\n"); 157 (void) fprintf(file, "first 1 bit should move right 1 position each line\n"); 158 for (i=0; i < test_length; i++) { 159 bit_nclear(bs, 0, test_length - 1); 160 bit_nset(bs, i, test_length - 1); 161 (void) fprintf(file, "%3d ", i); printbits(file, bs, test_length); 162 } 163 164 (void) fprintf(file, "\n"); 165 (void) fprintf(file, "first 0 bit should move right 1 position each line\n"); 166 for (i=0; i < test_length; i++) { 167 bit_nset(bs, 0, test_length - 1); 168 bit_nclear(bs, i, test_length - 1); 169 (void) fprintf(file, "%3d ", i); printbits(file, bs, test_length); 170 } 171 172 (void) fprintf(file, "\n"); 173 (void) fprintf(file, "first 0 bit should move left 1 position each line\n"); 174 for (i=0; i < test_length; i++) { 175 bit_nclear(bs, 0, test_length - 1); 176 bit_nset(bs, 0, test_length - 1 - i); 177 (void) fprintf(file, "%3d ", i); printbits(file, bs, test_length); 178 } 179 180 (void) fprintf(file, "\n"); 181 (void) fprintf(file, "first 1 bit should move left 1 position each line\n"); 182 for (i=0; i < test_length; i++) { 183 bit_nset(bs, 0, test_length - 1); 184 bit_nclear(bs, 0, test_length - 1 - i); 185 (void) fprintf(file, "%3d ", i); printbits(file, bs, test_length); 186 } 187 188 (void) fprintf(file, "\n"); 189 (void) fprintf(file, "0 bit should move right 1 position each line\n"); 190 for (i=0; i < test_length; i++) { 191 bit_nset(bs, 0, test_length - 1); 192 bit_nclear(bs, i, i); 193 (void) fprintf(file, "%3d ", i); printbits(file, bs, test_length); 194 } 195 196 (void) fprintf(file, "\n"); 197 (void) fprintf(file, "1 bit should move right 1 position each line\n"); 198 for (i=0; i < test_length; i++) { 199 bit_nclear(bs, 0, test_length - 1); 200 bit_nset(bs, i, i); 201 (void) fprintf(file, "%3d ", i); printbits(file, bs, test_length); 202 } 203 204 (void) free(bs); 205 } 206 207 static void 208 one_check(const atf_tc_t *tc, const int test_length) 209 { 210 FILE *out; 211 char command[1024]; 212 213 ATF_REQUIRE((out = fopen("out", "w")) != NULL); 214 calculate_data(out, test_length); 215 fclose(out); 216 217 /* XXX The following is a huge hack that was added to simplify the 218 * conversion of these tests from src/regress/ to src/tests/. The 219 * tests in this file should be checking their own results, without 220 * having to resort to external data files. */ 221 snprintf(command, sizeof(command), "diff -u %s/d_bitstring_%d.out out", 222 atf_tc_get_config_var(tc, "srcdir"), test_length); 223 if (system(command) != EXIT_SUCCESS) 224 atf_tc_fail("Test failed; see output for details"); 225 } 226 227 ATF_TC(bits_8); 228 ATF_TC_HEAD(bits_8, tc) 229 { 230 atf_tc_set_md_var(tc, "descr", "Checks 8-bit long bitstrings"); 231 } 232 ATF_TC_BODY(bits_8, tc) 233 { 234 one_check(tc, 8); 235 } 236 237 ATF_TC(bits_27); 238 ATF_TC_HEAD(bits_27, tc) 239 { 240 atf_tc_set_md_var(tc, "descr", "Checks 27-bit long bitstrings"); 241 } 242 ATF_TC_BODY(bits_27, tc) 243 { 244 one_check(tc, 27); 245 } 246 247 ATF_TC(bits_32); 248 ATF_TC_HEAD(bits_32, tc) 249 { 250 atf_tc_set_md_var(tc, "descr", "Checks 32-bit long bitstrings"); 251 } 252 ATF_TC_BODY(bits_32, tc) 253 { 254 one_check(tc, 32); 255 } 256 257 ATF_TC(bits_49); 258 ATF_TC_HEAD(bits_49, tc) 259 { 260 atf_tc_set_md_var(tc, "descr", "Checks 49-bit long bitstrings"); 261 } 262 ATF_TC_BODY(bits_49, tc) 263 { 264 one_check(tc, 49); 265 } 266 267 ATF_TC(bits_64); 268 ATF_TC_HEAD(bits_64, tc) 269 { 270 atf_tc_set_md_var(tc, "descr", "Checks 64-bit long bitstrings"); 271 } 272 ATF_TC_BODY(bits_64, tc) 273 { 274 one_check(tc, 64); 275 } 276 277 ATF_TC(bits_67); 278 ATF_TC_HEAD(bits_67, tc) 279 { 280 atf_tc_set_md_var(tc, "descr", "Checks 67-bit long bitstrings"); 281 } 282 ATF_TC_BODY(bits_67, tc) 283 { 284 one_check(tc, 67); 285 } 286 287 ATF_TP_ADD_TCS(tp) 288 { 289 290 ATF_TP_ADD_TC(tp, bits_8); 291 ATF_TP_ADD_TC(tp, bits_27); 292 ATF_TP_ADD_TC(tp, bits_32); 293 ATF_TP_ADD_TC(tp, bits_49); 294 ATF_TP_ADD_TC(tp, bits_64); 295 ATF_TP_ADD_TC(tp, bits_67); 296 297 return atf_no_error(); 298 } 299