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comparison: src/cx/compare.h

src/cx/compare.h

changeset 1062
8baed9b38bc6
parent 985
68754c7de906
equal deleted inserted replaced
1061:c7d23892eab5 1062:8baed9b38bc6
41 #ifdef __cplusplus 41 #ifdef __cplusplus
42 extern "C" { 42 extern "C" {
43 #endif 43 #endif
44 44
45 /** 45 /**
46 * A comparator function comparing two collection elements. 46 * A comparator function comparing two arbitrary values.
47 *
48 * All functions from compare.h with the cx_cmp prefix are
49 * compatible with this signature and can be used as
50 * compare function for collections, or other implementations
51 * that need to be type-agnostic.
52 *
53 * For simple comparisons the cx_vcmp family of functions
54 * can be used, but they are NOT compatible with this function
55 * pointer.
47 */ 56 */
48 cx_attr_nonnull 57 cx_attr_nonnull
49 cx_attr_nodiscard 58 cx_attr_nodiscard
50 typedef int(*cx_compare_func)( 59 typedef int(*cx_compare_func)(
51 const void *left, 60 const void *left,
63 cx_attr_nonnull 72 cx_attr_nonnull
64 cx_attr_nodiscard 73 cx_attr_nodiscard
65 int cx_cmp_int(const void *i1, const void *i2); 74 int cx_cmp_int(const void *i1, const void *i2);
66 75
67 /** 76 /**
77 * Compares two ints.
78 *
79 * @param i1 integer one
80 * @param i2 integer two
81 * @return -1, if i1 is less than i2, 0 if both are equal,
82 * 1 if i1 is greater than i2
83 */
84 cx_attr_nodiscard
85 int cx_vcmp_int(int i1, int i2);
86
87 /**
68 * Compares two integers of type long int. 88 * Compares two integers of type long int.
69 * 89 *
70 * @param i1 pointer to long integer one 90 * @param i1 pointer to long integer one
71 * @param i2 pointer to long integer two 91 * @param i2 pointer to long integer two
72 * @return -1, if *i1 is less than *i2, 0 if both are equal, 92 * @return -1, if *i1 is less than *i2, 0 if both are equal,
75 cx_attr_nonnull 95 cx_attr_nonnull
76 cx_attr_nodiscard 96 cx_attr_nodiscard
77 int cx_cmp_longint(const void *i1, const void *i2); 97 int cx_cmp_longint(const void *i1, const void *i2);
78 98
79 /** 99 /**
100 * Compares two long ints.
101 *
102 * @param i1 long integer one
103 * @param i2 long integer two
104 * @return -1, if i1 is less than i2, 0 if both are equal,
105 * 1 if i1 is greater than i2
106 */
107 cx_attr_nodiscard
108 int cx_vcmp_longint(long int i1, long int i2);
109
110 /**
80 * Compares two integers of type long long. 111 * Compares two integers of type long long.
81 * 112 *
82 * @param i1 pointer to long long one 113 * @param i1 pointer to long long one
83 * @param i2 pointer to long long two 114 * @param i2 pointer to long long two
84 * @return -1, if *i1 is less than *i2, 0 if both are equal, 115 * @return -1, if *i1 is less than *i2, 0 if both are equal,
87 cx_attr_nonnull 118 cx_attr_nonnull
88 cx_attr_nodiscard 119 cx_attr_nodiscard
89 int cx_cmp_longlong(const void *i1, const void *i2); 120 int cx_cmp_longlong(const void *i1, const void *i2);
90 121
91 /** 122 /**
123 * Compares twolong long ints.
124 *
125 * @param i1 long long int one
126 * @param i2 long long int two
127 * @return -1, if i1 is less than i2, 0 if both are equal,
128 * 1 if i1 is greater than i2
129 */
130 cx_attr_nodiscard
131 int cx_vcmp_longlong(long long int i1, long long int i2);
132
133 /**
92 * Compares two integers of type int16_t. 134 * Compares two integers of type int16_t.
93 * 135 *
94 * @param i1 pointer to int16_t one 136 * @param i1 pointer to int16_t one
95 * @param i2 pointer to int16_t two 137 * @param i2 pointer to int16_t two
96 * @return -1, if *i1 is less than *i2, 0 if both are equal, 138 * @return -1, if *i1 is less than *i2, 0 if both are equal,
99 cx_attr_nonnull 141 cx_attr_nonnull
100 cx_attr_nodiscard 142 cx_attr_nodiscard
101 int cx_cmp_int16(const void *i1, const void *i2); 143 int cx_cmp_int16(const void *i1, const void *i2);
102 144
103 /** 145 /**
146 * Compares two integers of type int16_t.
147 *
148 * @param i1 int16_t one
149 * @param i2 int16_t two
150 * @return -1, if i1 is less than i2, 0 if both are equal,
151 * 1 if i1 is greater than i2
152 */
153 cx_attr_nodiscard
154 int cx_vcmp_int16(int16_t i1, int16_t i2);
155
156 /**
104 * Compares two integers of type int32_t. 157 * Compares two integers of type int32_t.
105 * 158 *
106 * @param i1 pointer to int32_t one 159 * @param i1 pointer to int32_t one
107 * @param i2 pointer to int32_t two 160 * @param i2 pointer to int32_t two
108 * @return -1, if *i1 is less than *i2, 0 if both are equal, 161 * @return -1, if *i1 is less than *i2, 0 if both are equal,
111 cx_attr_nonnull 164 cx_attr_nonnull
112 cx_attr_nodiscard 165 cx_attr_nodiscard
113 int cx_cmp_int32(const void *i1, const void *i2); 166 int cx_cmp_int32(const void *i1, const void *i2);
114 167
115 /** 168 /**
169 * Compares two integers of type int32_t.
170 *
171 * @param i1 int32_t one
172 * @param i2 int32_t two
173 * @return -1, if i1 is less than i2, 0 if both are equal,
174 * 1 if i1 is greater than i2
175 */
176 cx_attr_nodiscard
177 int cx_vcmp_int32(int32_t i1, int32_t i2);
178
179 /**
116 * Compares two integers of type int64_t. 180 * Compares two integers of type int64_t.
117 * 181 *
118 * @param i1 pointer to int64_t one 182 * @param i1 pointer to int64_t one
119 * @param i2 pointer to int64_t two 183 * @param i2 pointer to int64_t two
120 * @return -1, if *i1 is less than *i2, 0 if both are equal, 184 * @return -1, if *i1 is less than *i2, 0 if both are equal,
123 cx_attr_nonnull 187 cx_attr_nonnull
124 cx_attr_nodiscard 188 cx_attr_nodiscard
125 int cx_cmp_int64(const void *i1, const void *i2); 189 int cx_cmp_int64(const void *i1, const void *i2);
126 190
127 /** 191 /**
192 * Compares two integers of type int64_t.
193 *
194 * @param i1 int64_t one
195 * @param i2 int64_t two
196 * @return -1, if i1 is less than i2, 0 if both are equal,
197 * 1 if i1 is greater than i2
198 */
199 cx_attr_nodiscard
200 int cx_vcmp_int64(int64_t i1, int64_t i2);
201
202 /**
128 * Compares two integers of type unsigned int. 203 * Compares two integers of type unsigned int.
129 * 204 *
130 * @param i1 pointer to unsigned integer one 205 * @param i1 pointer to unsigned integer one
131 * @param i2 pointer to unsigned integer two 206 * @param i2 pointer to unsigned integer two
132 * @return -1, if *i1 is less than *i2, 0 if both are equal, 207 * @return -1, if *i1 is less than *i2, 0 if both are equal,
135 cx_attr_nonnull 210 cx_attr_nonnull
136 cx_attr_nodiscard 211 cx_attr_nodiscard
137 int cx_cmp_uint(const void *i1, const void *i2); 212 int cx_cmp_uint(const void *i1, const void *i2);
138 213
139 /** 214 /**
215 * Compares two unsigned ints.
216 *
217 * @param i1 unsigned integer one
218 * @param i2 unsigned integer two
219 * @return -1, if i1 is less than i2, 0 if both are equal,
220 * 1 if i1 is greater than i2
221 */
222 cx_attr_nodiscard
223 int cx_vcmp_uint(unsigned int i1, unsigned int i2);
224
225 /**
140 * Compares two integers of type unsigned long int. 226 * Compares two integers of type unsigned long int.
141 * 227 *
142 * @param i1 pointer to unsigned long integer one 228 * @param i1 pointer to unsigned long integer one
143 * @param i2 pointer to unsigned long integer two 229 * @param i2 pointer to unsigned long integer two
144 * @return -1, if *i1 is less than *i2, 0 if both are equal, 230 * @return -1, if *i1 is less than *i2, 0 if both are equal,
147 cx_attr_nonnull 233 cx_attr_nonnull
148 cx_attr_nodiscard 234 cx_attr_nodiscard
149 int cx_cmp_ulongint(const void *i1, const void *i2); 235 int cx_cmp_ulongint(const void *i1, const void *i2);
150 236
151 /** 237 /**
238 * Compares two unsigned long ints.
239 *
240 * @param i1 unsigned long integer one
241 * @param i2 unsigned long integer two
242 * @return -1, if i1 is less than i2, 0 if both are equal,
243 * 1 if i1 is greater than i2
244 */
245 cx_attr_nodiscard
246 int cx_vcmp_ulongint(unsigned long int i1, unsigned long int i2);
247
248 /**
152 * Compares two integers of type unsigned long long. 249 * Compares two integers of type unsigned long long.
153 * 250 *
154 * @param i1 pointer to unsigned long long one 251 * @param i1 pointer to unsigned long long one
155 * @param i2 pointer to unsigned long long two 252 * @param i2 pointer to unsigned long long two
156 * @return -1, if *i1 is less than *i2, 0 if both are equal, 253 * @return -1, if *i1 is less than *i2, 0 if both are equal,
159 cx_attr_nonnull 256 cx_attr_nonnull
160 cx_attr_nodiscard 257 cx_attr_nodiscard
161 int cx_cmp_ulonglong(const void *i1, const void *i2); 258 int cx_cmp_ulonglong(const void *i1, const void *i2);
162 259
163 /** 260 /**
261 * Compares two unsigned long long ints.
262 *
263 * @param i1 unsigned long long one
264 * @param i2 unsigned long long two
265 * @return -1, if i1 is less than i2, 0 if both are equal,
266 * 1 if i1 is greater than i2
267 */
268 cx_attr_nodiscard
269 int cx_vcmp_ulonglong(unsigned long long int i1, unsigned long long int i2);
270
271 /**
164 * Compares two integers of type uint16_t. 272 * Compares two integers of type uint16_t.
165 * 273 *
166 * @param i1 pointer to uint16_t one 274 * @param i1 pointer to uint16_t one
167 * @param i2 pointer to uint16_t two 275 * @param i2 pointer to uint16_t two
168 * @return -1, if *i1 is less than *i2, 0 if both are equal, 276 * @return -1, if *i1 is less than *i2, 0 if both are equal,
171 cx_attr_nonnull 279 cx_attr_nonnull
172 cx_attr_nodiscard 280 cx_attr_nodiscard
173 int cx_cmp_uint16(const void *i1, const void *i2); 281 int cx_cmp_uint16(const void *i1, const void *i2);
174 282
175 /** 283 /**
284 * Compares two integers of type uint16_t.
285 *
286 * @param i1 uint16_t one
287 * @param i2 uint16_t two
288 * @return -1, if i1 is less than i2, 0 if both are equal,
289 * 1 if i1 is greater than i2
290 */
291 cx_attr_nodiscard
292 int cx_vcmp_uint16(uint16_t i1, uint16_t i2);
293
294 /**
176 * Compares two integers of type uint32_t. 295 * Compares two integers of type uint32_t.
177 * 296 *
178 * @param i1 pointer to uint32_t one 297 * @param i1 pointer to uint32_t one
179 * @param i2 pointer to uint32_t two 298 * @param i2 pointer to uint32_t two
180 * @return -1, if *i1 is less than *i2, 0 if both are equal, 299 * @return -1, if *i1 is less than *i2, 0 if both are equal,
183 cx_attr_nonnull 302 cx_attr_nonnull
184 cx_attr_nodiscard 303 cx_attr_nodiscard
185 int cx_cmp_uint32(const void *i1, const void *i2); 304 int cx_cmp_uint32(const void *i1, const void *i2);
186 305
187 /** 306 /**
307 * Compares two integers of type uint32_t.
308 *
309 * @param i1 uint32_t one
310 * @param i2 uint32_t two
311 * @return -1, if i1 is less than i2, 0 if both are equal,
312 * 1 if i1 is greater than i2
313 */
314 cx_attr_nodiscard
315 int cx_vcmp_uint32(uint32_t i1, uint32_t i2);
316
317 /**
188 * Compares two integers of type uint64_t. 318 * Compares two integers of type uint64_t.
189 * 319 *
190 * @param i1 pointer to uint64_t one 320 * @param i1 pointer to uint64_t one
191 * @param i2 pointer to uint64_t two 321 * @param i2 pointer to uint64_t two
192 * @return -1, if *i1 is less than *i2, 0 if both are equal, 322 * @return -1, if *i1 is less than *i2, 0 if both are equal,
193 * 1 if *i1 is greater than *i2 323 * 1 if *i1 is greater than *i2
194 */ 324 */
195 cx_attr_nonnull 325 cx_attr_nonnull
196 cx_attr_nodiscard 326 cx_attr_nodiscard
197 int cx_cmp_uint64(const void *i1, const void *i2); 327 int cx_cmp_uint64(const void *i1, const void *i2);
328
329 /**
330 * Compares two integers of type uint64_t.
331 *
332 * @param i1 uint64_t one
333 * @param i2 uint64_t two
334 * @return -1, if i1 is less than i2, 0 if both are equal,
335 * 1 if i1 is greater than i2
336 */
337 cx_attr_nodiscard
338 int cx_vcmp_uint64(uint64_t i1, uint64_t i2);
198 339
199 /** 340 /**
200 * Compares two real numbers of type float with precision 1e-6f. 341 * Compares two real numbers of type float with precision 1e-6f.
201 * 342 *
202 * @param f1 pointer to float one 343 * @param f1 pointer to float one
207 cx_attr_nonnull 348 cx_attr_nonnull
208 cx_attr_nodiscard 349 cx_attr_nodiscard
209 int cx_cmp_float(const void *f1, const void *f2); 350 int cx_cmp_float(const void *f1, const void *f2);
210 351
211 /** 352 /**
353 * Compares two real numbers of type float with precision 1e-6f.
354 *
355 * @param f1 float one
356 * @param f2 float two
357 * @return -1, if f1 is less than f2, 0 if both are equal,
358 * 1 if f1 is greater than f2
359 */
360 cx_attr_nodiscard
361 int cx_vcmp_float(float f1, float f2);
362
363 /**
212 * Compares two real numbers of type double with precision 1e-14. 364 * Compares two real numbers of type double with precision 1e-14.
213 * 365 *
214 * @param d1 pointer to double one 366 * @param d1 pointer to double one
215 * @param d2 pointer to double two 367 * @param d2 pointer to double two
216 * @return -1, if *d1 is less than *d2, 0 if both are equal, 368 * @return -1, if *d1 is less than *d2, 0 if both are equal,
219 cx_attr_nonnull 371 cx_attr_nonnull
220 cx_attr_nodiscard 372 cx_attr_nodiscard
221 int cx_cmp_double(const void *d1, const void *d2); 373 int cx_cmp_double(const void *d1, const void *d2);
222 374
223 /** 375 /**
376 * Convenience function
377 *
378 * @param d1 double one
379 * @param d2 double two
380 * @return -1, if d1 is less than d2, 0 if both are equal,
381 * 1 if d1 is greater than d2
382 */
383 cx_attr_nodiscard
384 int cx_vcmp_double(double d1, double d2);
385
386 /**
224 * Compares the integer representation of two pointers. 387 * Compares the integer representation of two pointers.
225 * 388 *
226 * @param ptr1 pointer to pointer one (const intptr_t*) 389 * @param ptr1 pointer to pointer one (const intptr_t*)
227 * @param ptr2 pointer to pointer two (const intptr_t*) 390 * @param ptr2 pointer to pointer two (const intptr_t*)
228 * @return -1 if *ptr1 is less than *ptr2, 0 if both are equal, 391 * @return -1 if *ptr1 is less than *ptr2, 0 if both are equal,
231 cx_attr_nonnull 394 cx_attr_nonnull
232 cx_attr_nodiscard 395 cx_attr_nodiscard
233 int cx_cmp_intptr(const void *ptr1, const void *ptr2); 396 int cx_cmp_intptr(const void *ptr1, const void *ptr2);
234 397
235 /** 398 /**
399 * Compares the integer representation of two pointers.
400 *
401 * @param ptr1 pointer one
402 * @param ptr2 pointer two
403 * @return -1 if ptr1 is less than ptr2, 0 if both are equal,
404 * 1 if ptr1 is greater than ptr2
405 */
406 cx_attr_nodiscard
407 int cx_vcmp_intptr(intptr_t ptr1, intptr_t ptr2);
408
409 /**
236 * Compares the unsigned integer representation of two pointers. 410 * Compares the unsigned integer representation of two pointers.
237 * 411 *
238 * @param ptr1 pointer to pointer one (const uintptr_t*) 412 * @param ptr1 pointer to pointer one (const uintptr_t*)
239 * @param ptr2 pointer to pointer two (const uintptr_t*) 413 * @param ptr2 pointer to pointer two (const uintptr_t*)
240 * @return -1 if *ptr1 is less than *ptr2, 0 if both are equal, 414 * @return -1 if *ptr1 is less than *ptr2, 0 if both are equal,
243 cx_attr_nonnull 417 cx_attr_nonnull
244 cx_attr_nodiscard 418 cx_attr_nodiscard
245 int cx_cmp_uintptr(const void *ptr1, const void *ptr2); 419 int cx_cmp_uintptr(const void *ptr1, const void *ptr2);
246 420
247 /** 421 /**
248 * Compares the pointers specified in the arguments without de-referencing. 422 * Compares the unsigned integer representation of two pointers.
249 * 423 *
250 * @param ptr1 pointer one 424 * @param ptr1 pointer one
251 * @param ptr2 pointer two 425 * @param ptr2 pointer two
252 * @return -1 if ptr1 is less than ptr2, 0 if both are equal, 426 * @return -1 if ptr1 is less than ptr2, 0 if both are equal,
253 * 1 if ptr1 is greater than ptr2 427 * 1 if ptr1 is greater than ptr2
254 */ 428 */
429 cx_attr_nodiscard
430 int cx_vcmp_uintptr(uintptr_t ptr1, uintptr_t ptr2);
431
432 /**
433 * Compares the pointers specified in the arguments without de-referencing.
434 *
435 * @param ptr1 pointer one
436 * @param ptr2 pointer two
437 * @return -1 if ptr1 is less than ptr2, 0 if both are equal,
438 * 1 if ptr1 is greater than ptr2
439 */
255 cx_attr_nonnull 440 cx_attr_nonnull
256 cx_attr_nodiscard 441 cx_attr_nodiscard
257 int cx_cmp_ptr(const void *ptr1, const void *ptr2); 442 int cx_cmp_ptr(const void *ptr1, const void *ptr2);
258 443
259 #ifdef __cplusplus 444 #ifdef __cplusplus

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