alibGetRange
Retrieves a contiguous subarray of an array. The PV-WAVE API for this routine is
array indexing that uses any combination of scalars and range operators. This routine can be used for slicing and more generally for retrieving any
m-dimensional box from any
n-dimensional array (
m <=
n).
Prototypes
void alibGetRangeb( wvlong n, wvlong *d, wvlong *b, wvlong *e, UCHAR *p, UCHAR *q )
void alibGetRanges( wvlong n, wvlong *d, wvlong *b, wvlong *e, short *p, short *q )
void alibGetRangei( wvlong n, wvlong *d, wvlong *b, wvlong *e, int *p, int *q )
void alibGetRangel( wvlong n, wvlong *d, wvlong *b, wvlong *e, wvlong *p, wvlong *q )
void alibGetRangef( wvlong n, wvlong *d, wvlong *b, wvlong *e, float *p, float *q )
void alibGetRanged( wvlong n, wvlong *d, wvlong *b, wvlong *e, double *p, double *q )
void alibGetRangec( wvlong n, wvlong *d, wvlong *b, wvlong *e, COMPLEX *p, COMPLEX *q )
void alibGetRangez( wvlong n, wvlong *d, wvlong *b, wvlong *e, DCOMPLEX *p, DCOMPLEX *q )
Parameters
n — (Input) The number of dimensions in the source array.
*d — (Input) The n-element array of dimensions in the source array.
*b — (Input) The n-element array of beginning subscripts defining the 'lower-left' corner of the m-dimensional box to be retrieved from the source array.
*e — (Input) The n-element array of ending subscripts defining the 'upper-right' corner of the m-dimensional box to be retrieved from the source array. Note that if b[i] = e[i] for some i then m < n, e.g., as in slicing.
*p — (Input) The source array.
*q — (Input/Output) The destination array. On return, array q is a copy of the box in array p defined by corners b and e.
Example
Here we extract the interior of a one-dimensional, a two-dimensional, a three-dimensional, and a four-dimensional array.
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "alib.h"
void main() { wvlong dims[4] = {3,4,5,6}; wvlong begs[4] = {1,1,1,1}; wvlong ends[4] = {1,2,3,4}; short *s, *s0;
s0 = (short*)malloc(360*sizeof(short));
s = (short*)malloc(360*sizeof(short));
alibinit( NULL, NULL, NULL, NULL );
printf( "\n\n fabricate some test data" );
alibIndexs( 360, 0, 1, s0 );
printf( "\n\n print a 1d-array, then extract its interior and print it" );
alibPrintArrays( 1, 1, 1, 6, s0, NULL );
alibGetRanges( 1, &dims[3], &begs[3], &ends[3], s0, s );
alibPrintArrays( 1, 1, 1, 4, s, NULL );
printf( "\n\n print a 2d-array, then extract its interior and print it" );
alibPrintArrays( 1, 1, 5, 6, s0, NULL );
alibGetRanges( 2, &dims[2], &begs[2], &ends[2], s0, s );
alibPrintArrays( 1, 1, 3, 4, s, NULL );
printf( "\n\n print a 3d-array, then extract its interior and print it" );
alibPrintArrays( 1, 4, 5, 6, s0, NULL );
alibGetRanges( 3, &dims[1], &begs[1], &ends[1], s0, s );
alibPrintArrays( 1, 2, 3, 4, s, NULL );
printf( "\n\n print a 4d-array, then extract its interior and print it" );
alibPrintArrays( 3, 4, 5, 6, s0, NULL );
alibGetRanges( 4, dims, begs, ends, s0, s );
alibPrintArrays( 1, 2, 3, 4, s, NULL );
}
Output:
print a 1d-array, then extract its interior and print it
0 1 2 3 4 5
1 2 3 4
print a 2d-array, then extract its interior and print it
0 1 2 3 4 5
6 7 8 9 10 11
12 13 14 15 16 17
18 19 20 21 22 23
24 25 26 27 28 29
7 8 9 10
13 14 15 16
19 20 21 22
print a 3d-array, then extract its interior and print it
0 1 2 3 4 5
6 7 8 9 10 11
12 13 14 15 16 17
18 19 20 21 22 23
24 25 26 27 28 29
30 31 32 33 34 35
36 37 38 39 40 41
42 43 44 45 46 47
48 49 50 51 52 53
54 55 56 57 58 59
60 61 62 63 64 65
66 67 68 69 70 71
72 73 74 75 76 77
78 79 80 81 82 83
84 85 86 87 88 89
90 91 92 93 94 95
96 97 98 99 100 101
102 103 104 105 106 107
108 109 110 111 112 113
114 115 116 117 118 119
37 38 39 40
43 44 45 46
49 50 51 52
67 68 69 70
73 74 75 76
79 80 81 82
print a 4d-array, then extract its interior and print it
0 1 2 3 4 5
6 7 8 9 10 11
12 13 14 15 16 17
18 19 20 21 22 23
24 25 26 27 28 29
30 31 32 33 34 35
36 37 38 39 40 41
42 43 44 45 46 47
48 49 50 51 52 53
54 55 56 57 58 59
60 61 62 63 64 65
66 67 68 69 70 71
72 73 74 75 76 77
78 79 80 81 82 83
84 85 86 87 88 89
90 91 92 93 94 95
96 97 98 99 100 101
102 103 104 105 106 107
108 109 110 111 112 113
114 115 116 117 118 119
120 121 122 123 124 125
126 127 128 129 130 131
132 133 134 135 136 137
138 139 140 141 142 143
144 145 146 147 148 149
150 151 152 153 154 155
156 157 158 159 160 161
162 163 164 165 166 167
168 169 170 171 172 173
174 175 176 177 178 179
180 181 182 183 184 185
186 187 188 189 190 191
192 193 194 195 196 197
198 199 200 201 202 203
204 205 206 207 208 209
210 211 212 213 214 215
216 217 218 219 220 221
222 223 224 225 226 227
228 229 230 231 232 233
234 235 236 237 238 239
240 241 242 243 244 245
246 247 248 249 250 251
252 253 254 255 256 257
258 259 260 261 262 263
264 265 266 267 268 269
270 271 272 273 274 275
276 277 278 279 280 281
282 283 284 285 286 287
288 289 290 291 292 293
294 295 296 297 298 299
300 301 302 303 304 305
306 307 308 309 310 311
312 313 314 315 316 317
318 319 320 321 322 323
324 325 326 327 328 329
330 331 332 333 334 335
336 337 338 339 340 341
342 343 344 345 346 347
348 349 350 351 352 353
354 355 356 357 358 359
157 158 159 160
163 164 165 166
169 170 171 172
187 188 189 190
193 194 195 196
199 200 201 202
Version 2017.0
Copyright © 2017, Rogue Wave Software, Inc. All Rights Reserved.