Mercurial > gnulib
annotate tests/test-tsearch.c @ 40155:84fd38f4932c
tests: Fix some "unused variable" warnings.
* tests/test-fts.c (fts_dealloc): Remove unused variable.
* tests/unigbrk/test-uc-grapheme-breaks.c (main): Likewise.
* tests/test-striconveh.c (main): Move some variable into the
'#if HAVE_ICONV'.
* tests/test-striconveha.c (main): Likewise.
* tests/uniconv/test-u8-conv-from-enc.c (main): Likewise.
* tests/uniconv/test-u16-conv-from-enc.c (main): Likewise.
* tests/uniconv/test-u32-conv-from-enc.c (main): Likewise.
* tests/uniconv/test-u8-conv-to-enc.c (main): Likewise.
* tests/uniconv/test-u16-conv-to-enc.c (main): Likewise.
* tests/uniconv/test-u32-conv-to-enc.c (main): Likewise.
* tests/uniconv/test-u8-strconv-from-enc.c (main): Likewise.
* tests/uniconv/test-u16-strconv-from-enc.c (main): Likewise.
* tests/uniconv/test-u32-strconv-from-enc.c (main): Likewise.
* tests/uniconv/test-u8-strconv-to-enc.c (main): Likewise.
* tests/uniconv/test-u16-strconv-to-enc.c (main): Likewise.
* tests/uniconv/test-u32-strconv-to-enc.c (main): Likewise.
* tests/test-tsearch.c (main): Move some variable into the
'#if HAVE_INITSTATE'.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Sun, 27 Jan 2019 12:24:47 +0100 |
| parents | b06060465f09 |
| children | a315d09bcec4 |
| rev | line source |
|---|---|
| 8534 | 1 /* Test program for tsearch et al. |
|
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maint: Run 'make update-copyright'
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2 Copyright (C) 1997, 2000-2001, 2007-2019 Free Software Foundation, Inc. |
| 8534 | 3 This file is part of the GNU C Library. |
| 4 | |
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5 The GNU C Library is free software: you can redistribute it and/or |
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6 modify it under the terms of the GNU Lesser General Public License as |
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7 published by the Free Software Foundation; either version 3 of the |
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8 License, or (at your option) any later version. |
| 8534 | 9 |
| 10 The GNU C Library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Lesser General Public License for more details. | |
| 14 | |
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15 You should have received a copy of the GNU Lesser General Public License |
| 19190 | 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| 8534 | 17 |
| 18 #include <config.h> | |
| 19 | |
| 20 #include <search.h> | |
| 21 | |
| 12489 | 22 #include "signature.h" |
| 23 SIGNATURE_CHECK (tdelete, void *, (void const *, void **, | |
| 24 int (*) (void const *, void const *))); | |
| 25 SIGNATURE_CHECK (tfind, void *, (void const *, void * const *, | |
| 26 int (*) (void const *, void const *))); | |
| 27 SIGNATURE_CHECK (tsearch, void *, (void const *, void **, | |
| 28 int (*) (void const *, void const *))); | |
| 29 SIGNATURE_CHECK (twalk, void, (void const *, | |
| 30 void (*) (void const *, VISIT, int))); | |
| 31 | |
| 8534 | 32 #include <stdint.h> |
| 33 #include <stdio.h> | |
| 34 #include <stdlib.h> | |
| 35 #include <string.h> | |
| 36 | |
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37 #include "macros.h" |
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38 |
| 8534 | 39 #define SEED 0 |
| 40 #if HAVE_TSEARCH | |
| 41 /* The system's tsearch() is not expected to keep the tree balanced. */ | |
| 42 # define BALANCED 0 | |
| 43 #else | |
| 44 /* The gnulib replacement tsearch() should keep the tree balanced. */ | |
| 45 # define BALANCED 1 | |
| 46 #endif | |
| 47 #define PASSES 100 | |
| 48 | |
| 49 #if BALANCED | |
| 50 #include <math.h> | |
| 51 #define SIZE 1000 | |
| 52 #else | |
| 53 #define SIZE 100 | |
| 54 #endif | |
| 55 | |
| 56 #undef random | |
| 57 #define random() (int) ((unsigned int) rand () >> 3) | |
| 58 | |
| 59 enum order | |
| 60 { | |
| 61 ascending, | |
| 62 descending, | |
| 63 randomorder | |
| 64 }; | |
| 65 | |
| 66 enum action | |
| 67 { | |
| 68 build, | |
| 69 build_and_del, | |
| 70 delete, | |
| 71 find | |
| 72 }; | |
| 73 | |
| 74 /* Set to 1 if a test is flunked. */ | |
| 75 static int error = 0; | |
| 76 | |
| 77 /* The keys we add to the tree. */ | |
| 78 static int x[SIZE]; | |
| 79 | |
| 16358 | 80 /* Pointers into the key array, possibly permuted, to define an order |
| 8534 | 81 for insertion/removal. */ |
| 82 static int y[SIZE]; | |
| 83 | |
| 84 /* Flags set for each element visited during a tree walk. */ | |
| 85 static int z[SIZE]; | |
| 86 | |
| 87 /* Depths for all the elements, to check that the depth is constant for | |
| 88 all three visits. */ | |
| 89 static int depths[SIZE]; | |
| 90 | |
| 91 /* Maximum depth during a tree walk. */ | |
| 92 static int max_depth; | |
| 93 | |
| 94 /* Compare two keys. */ | |
| 95 static int | |
| 96 cmp_fn (const void *a, const void *b) | |
| 97 { | |
| 98 return *(const int *) a - *(const int *) b; | |
| 99 } | |
| 100 | |
| 101 /* Permute an array of integers. */ | |
| 102 static void | |
| 103 memfry (int *string) | |
| 104 { | |
| 105 int i; | |
| 106 | |
| 107 for (i = 0; i < SIZE; ++i) | |
| 108 { | |
| 109 int32_t j; | |
| 110 int c; | |
| 111 | |
| 112 j = random () % SIZE; | |
| 113 | |
| 114 c = string[i]; | |
| 115 string[i] = string[j]; | |
| 116 string[j] = c; | |
| 117 } | |
| 118 } | |
| 119 | |
| 120 static void | |
| 121 walk_action (const void *nodep, const VISIT which, const int depth) | |
| 122 { | |
| 123 int key = **(int **) nodep; | |
| 124 | |
| 125 if (depth > max_depth) | |
| 126 max_depth = depth; | |
| 127 if (which == leaf || which == preorder) | |
| 128 { | |
| 129 ++z[key]; | |
| 130 depths[key] = depth; | |
| 131 } | |
| 132 else | |
| 133 { | |
| 134 if (depths[key] != depth) | |
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135 { |
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136 fputs ("Depth for one element is not constant during tree walk.\n", |
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137 stdout); |
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138 } |
| 8534 | 139 } |
| 140 } | |
| 141 | |
| 142 static void | |
| 143 walk_tree (void *root, int expected_count) | |
| 144 { | |
| 145 int i; | |
| 146 | |
| 147 memset (z, 0, sizeof z); | |
| 148 max_depth = 0; | |
| 149 | |
| 150 twalk (root, walk_action); | |
| 151 for (i = 0; i < expected_count; ++i) | |
| 152 if (z[i] != 1) | |
| 153 { | |
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154 fputs ("Node was not visited.\n", stdout); |
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155 error = 1; |
| 8534 | 156 } |
| 157 | |
| 158 #if BALANCED | |
| 159 if (max_depth > log (expected_count) * 2 + 2) | |
| 160 #else | |
| 161 if (max_depth > expected_count) | |
| 162 #endif | |
| 163 { | |
| 164 fputs ("Depth too large during tree walk.\n", stdout); | |
| 165 error = 1; | |
| 166 } | |
| 167 } | |
| 168 | |
| 169 /* Perform an operation on a tree. */ | |
| 170 static void | |
| 171 mangle_tree (enum order how, enum action what, void **root, int lag) | |
| 172 { | |
| 173 int i; | |
| 174 | |
| 175 if (how == randomorder) | |
| 176 { | |
| 177 for (i = 0; i < SIZE; ++i) | |
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178 y[i] = i; |
| 8534 | 179 memfry (y); |
| 180 } | |
| 181 | |
| 182 for (i = 0; i < SIZE + lag; ++i) | |
| 183 { | |
| 184 void *elem; | |
| 185 int j, k; | |
| 186 | |
| 187 switch (how) | |
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188 { |
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189 case randomorder: |
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190 if (i >= lag) |
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191 k = y[i - lag]; |
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192 else |
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193 /* Ensure that the array index is within bounds. */ |
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194 k = y[(SIZE - i - 1 + lag) % SIZE]; |
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195 j = y[i % SIZE]; |
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196 break; |
| 8534 | 197 |
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198 case ascending: |
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199 k = i - lag; |
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200 j = i; |
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201 break; |
| 8534 | 202 |
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203 case descending: |
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204 k = SIZE - i - 1 + lag; |
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205 j = SIZE - i - 1; |
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206 break; |
| 8534 | 207 |
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208 default: |
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209 /* This never should happen, but gcc isn't smart enough to |
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210 recognize it. */ |
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211 abort (); |
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212 } |
| 8534 | 213 |
| 214 switch (what) | |
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215 { |
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216 case build_and_del: |
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217 case build: |
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218 if (i < SIZE) |
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219 { |
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220 if (tfind (x + j, (void *const *) root, cmp_fn) != NULL) |
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221 { |
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222 fputs ("Found element which is not in tree yet.\n", stdout); |
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223 error = 1; |
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224 } |
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225 elem = tsearch (x + j, root, cmp_fn); |
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226 if (elem == 0 |
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227 || tfind (x + j, (void *const *) root, cmp_fn) == NULL) |
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228 { |
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229 fputs ("Couldn't find element after it was added.\n", |
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230 stdout); |
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231 error = 1; |
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232 } |
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233 } |
| 8534 | 234 |
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235 if (what == build || i < lag) |
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236 break; |
| 8534 | 237 |
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238 j = k; |
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239 FALLTHROUGH; |
| 8534 | 240 |
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241 case delete: |
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242 elem = tfind (x + j, (void *const *) root, cmp_fn); |
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243 if (elem == NULL || tdelete (x + j, root, cmp_fn) == NULL) |
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244 { |
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245 fputs ("Error deleting element.\n", stdout); |
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246 error = 1; |
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247 } |
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248 break; |
| 8534 | 249 |
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250 case find: |
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251 if (tfind (x + j, (void *const *) root, cmp_fn) == NULL) |
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252 { |
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253 fputs ("Couldn't find element after it was added.\n", stdout); |
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254 error = 1; |
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255 } |
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256 break; |
| 8534 | 257 |
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258 } |
| 8534 | 259 } |
| 260 } | |
| 261 | |
| 262 | |
| 263 int | |
| 264 main (int argc, char **argv) | |
| 265 { | |
| 266 int total_error = 0; | |
| 267 void *root = NULL; | |
| 268 int i, j; | |
| 269 | |
| 9943 | 270 #if HAVE_INITSTATE |
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84fd38f4932c
tests: Fix some "unused variable" warnings.
Bruno Haible <bruno@clisp.org>
parents:
40057
diff
changeset
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271 static char state[8] = { 1, 2, 3, 4, 5, 6, 7, 8 }; |
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84fd38f4932c
tests: Fix some "unused variable" warnings.
Bruno Haible <bruno@clisp.org>
parents:
40057
diff
changeset
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272 |
| 8534 | 273 initstate (SEED, state, 8); |
| 9943 | 274 #endif |
| 8534 | 275 |
| 276 for (i = 0; i < SIZE; ++i) | |
| 277 x[i] = i; | |
| 278 | |
| 279 /* Do this loop several times to get different permutations for the | |
| 280 random case. */ | |
| 281 fputs ("Series I\n", stdout); | |
| 282 for (i = 0; i < PASSES; ++i) | |
| 283 { | |
| 284 fprintf (stdout, "Pass %d... ", i + 1); | |
| 285 fflush (stdout); | |
| 286 error = 0; | |
| 287 | |
| 288 mangle_tree (ascending, build, &root, 0); | |
| 289 mangle_tree (ascending, find, &root, 0); | |
| 290 mangle_tree (descending, find, &root, 0); | |
| 291 mangle_tree (randomorder, find, &root, 0); | |
| 292 walk_tree (root, SIZE); | |
| 293 mangle_tree (ascending, delete, &root, 0); | |
| 294 | |
| 295 mangle_tree (ascending, build, &root, 0); | |
| 296 walk_tree (root, SIZE); | |
| 297 mangle_tree (descending, delete, &root, 0); | |
| 298 | |
| 299 mangle_tree (ascending, build, &root, 0); | |
| 300 walk_tree (root, SIZE); | |
| 301 mangle_tree (randomorder, delete, &root, 0); | |
| 302 | |
| 303 mangle_tree (descending, build, &root, 0); | |
| 304 mangle_tree (ascending, find, &root, 0); | |
| 305 mangle_tree (descending, find, &root, 0); | |
| 306 mangle_tree (randomorder, find, &root, 0); | |
| 307 walk_tree (root, SIZE); | |
| 308 mangle_tree (descending, delete, &root, 0); | |
| 309 | |
| 310 mangle_tree (descending, build, &root, 0); | |
| 311 walk_tree (root, SIZE); | |
| 312 mangle_tree (descending, delete, &root, 0); | |
| 313 | |
| 314 mangle_tree (descending, build, &root, 0); | |
| 315 walk_tree (root, SIZE); | |
| 316 mangle_tree (randomorder, delete, &root, 0); | |
| 317 | |
| 318 mangle_tree (randomorder, build, &root, 0); | |
| 319 mangle_tree (ascending, find, &root, 0); | |
| 320 mangle_tree (descending, find, &root, 0); | |
| 321 mangle_tree (randomorder, find, &root, 0); | |
| 322 walk_tree (root, SIZE); | |
| 323 mangle_tree (randomorder, delete, &root, 0); | |
| 324 | |
| 325 for (j = 1; j < SIZE; j *= 2) | |
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e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
9943
diff
changeset
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326 { |
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e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
9943
diff
changeset
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327 mangle_tree (randomorder, build_and_del, &root, j); |
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e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
9943
diff
changeset
|
328 } |
| 8534 | 329 |
| 330 fputs (error ? " failed!\n" : " ok.\n", stdout); | |
| 331 total_error |= error; | |
| 332 } | |
| 333 | |
| 334 fputs ("Series II\n", stdout); | |
| 335 for (i = 1; i < SIZE; i *= 2) | |
| 336 { | |
| 337 fprintf (stdout, "For size %d... ", i); | |
| 338 fflush (stdout); | |
| 339 error = 0; | |
| 340 | |
| 341 mangle_tree (ascending, build_and_del, &root, i); | |
| 342 mangle_tree (descending, build_and_del, &root, i); | |
| 343 mangle_tree (ascending, build_and_del, &root, i); | |
| 344 mangle_tree (descending, build_and_del, &root, i); | |
| 345 mangle_tree (ascending, build_and_del, &root, i); | |
| 346 mangle_tree (descending, build_and_del, &root, i); | |
| 347 mangle_tree (ascending, build_and_del, &root, i); | |
| 348 mangle_tree (descending, build_and_del, &root, i); | |
| 349 | |
| 350 fputs (error ? " failed!\n" : " ok.\n", stdout); | |
| 351 total_error |= error; | |
| 352 } | |
| 353 | |
| 354 return total_error; | |
| 355 } |