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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770
|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2007-2008 Richard Hughes <richard@hughsie.com>
*
* Licensed under the GNU General Public License Version 2
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <glib.h>
#include "egg-debug.h"
#include "egg-array-float.h"
/**
* egg_array_float_guassian_value:
*
* @x: input value
* @sigma: sigma value
* Return value: the gaussian, in floating point precision
**/
static gfloat
egg_array_float_guassian_value (gfloat x, gfloat sigma)
{
return (1.0 / (sqrtf(2.0*3.1415927) * sigma)) * (expf((-(powf(x,2.0)))/(2.0 * powf(sigma, 2.0))));
}
/**
* egg_array_float_new:
*
* @length: length of array
* Return value: Allocate array
*
* Creates a new size array which is zeroed. Free with g_array_free();
**/
EggArrayFloat *
egg_array_float_new (guint length)
{
guint i;
EggArrayFloat *array;
array = g_array_sized_new (TRUE, FALSE, sizeof(gfloat), length);
array->len = length;
/* clear to 0.0 */
for (i=0; i<length; i++)
g_array_index (array, gfloat, i) = 0.0;
return array;
}
/**
* egg_array_float_get:
*
* @array: input array
**/
gfloat
egg_array_float_get (EggArrayFloat *array, guint i)
{
if (i >= array->len)
g_error ("above index! (%i)", i);
return g_array_index (array, gfloat, i);
}
/**
* egg_array_float_set:
*
* @array: input array
**/
void
egg_array_float_set (EggArrayFloat *array, guint i, gfloat value)
{
g_array_index (array, gfloat, i) = value;
}
/**
* egg_array_float_free:
*
* @array: input array
*
* Frees the array, deallocating data
**/
void
egg_array_float_free (EggArrayFloat *array)
{
if (array != NULL)
g_array_free (array, TRUE);
}
/**
* egg_array_float_get_average:
* @array: This class instance
*
* Gets the average value.
**/
gfloat
egg_array_float_get_average (EggArrayFloat *array)
{
guint i;
guint length;
gfloat average = 0;
length = array->len;
for (i=0; i<length; i++)
average += g_array_index (array, gfloat, i);
return average / (gfloat) length;
}
/**
* egg_array_float_compute_gaussian:
*
* @length: length of output array
* @sigma: sigma value
* Return value: Gaussian array
*
* Create a set of Gaussian array of a specified size
**/
EggArrayFloat *
egg_array_float_compute_gaussian (guint length, gfloat sigma)
{
EggArrayFloat *array;
guint half_length;
guint i;
gfloat division;
gfloat value;
g_return_val_if_fail (length % 2 == 1, NULL);
array = egg_array_float_new (length);
/* array positions 0..length, has to be an odd number */
half_length = (length / 2) + 1;
for (i=0; i<half_length; i++) {
division = half_length - (i + 1);
egg_debug ("half_length=%i, div=%f, sigma=%f", half_length, division, sigma);
g_array_index (array, gfloat, i) = egg_array_float_guassian_value (division, sigma);
}
/* no point working these out, we can just reflect the gaussian */
for (i=half_length; i<length; i++) {
division = g_array_index (array, gfloat, length-(i+1));
g_array_index (array, gfloat, i) = division;
}
/* make sure we get an accurate gaussian */
value = egg_array_float_sum (array);
if (fabs (value - 1.0f) > 0.01f) {
egg_warning ("got wrong sum (%f), perhaps sigma too high for size?", value);
egg_array_float_free (array);
array = NULL;
}
return array;
}
/**
* egg_array_float_sum:
*
* @array: input array
*
* Sum the elements of the array
**/
gfloat
egg_array_float_sum (EggArrayFloat *array)
{
guint length;
guint i;
gfloat total = 0;
length = array->len;
for (i=0; i<length; i++)
total += g_array_index (array, gfloat, i);
return total;
}
/**
* egg_array_float_print:
*
* @array: input array
*
* Print the array
**/
gboolean
egg_array_float_print (EggArrayFloat *array)
{
guint length;
guint i;
length = array->len;
/* debug out */
for (i=0; i<length; i++)
egg_debug ("[%i]\tval=%f", i, g_array_index (array, gfloat, i));
return TRUE;
}
/**
* egg_array_float_convolve:
*
* @data: input array
* @kernel: kernel array
* Return value: Colvolved array, same length as data
*
* Convolves an array with a kernel, and returns an array the same size.
* THIS FUNCTION IS REALLY SLOW...
**/
EggArrayFloat *
egg_array_float_convolve (EggArrayFloat *data, EggArrayFloat *kernel)
{
gint length_data;
gint length_kernel;
EggArrayFloat *result;
gfloat value;
gint i;
gint j;
gint idx;
length_data = data->len;
length_kernel = kernel->len;
result = egg_array_float_new (length_data);
/* convolve */
for (i=0;i<length_data;i++) {
value = 0;
for (j=0;j<length_kernel;j++) {
idx = i+j-(length_kernel/2);
if (idx < 0)
idx = 0;
else if (idx >= length_data)
idx = length_data - 1;
value += g_array_index (data, gfloat, idx) * g_array_index (kernel, gfloat, j);
}
g_array_index (result, gfloat, i) = value;
}
return result;
}
/**
* egg_array_float_compute_integral:
* @array: This class instance
*
* Computes complete discrete integral of dataset.
* Will only work with a step size of one.
**/
gfloat
egg_array_float_compute_integral (EggArrayFloat *array, guint x1, guint x2)
{
gfloat value;
guint i;
g_return_val_if_fail (x2 >= x1, 0.0);
/* if the same point, then we have no area */
if (x1 == x2)
return 0.0;
value = 0.0;
for (i=x1; i <= x2; i++)
value += g_array_index (array, gfloat, i);
return value;
}
/**
* powfi:
**/
static gfloat
powfi (gfloat base, guint n)
{
guint i;
gfloat retval = 1;
for (i=1; i <= n; i++)
retval *= base;
return retval;
}
/**
* egg_array_float_remove_outliers:
*
* @data: input array
* @size: size to analyse
* @sigma: sigma for standard deviation
* Return value: Data with outliers removed
*
* Compares local sections of the data, removing outliers if they fall
* outside of sigma, and using the average of the other points in its place.
**/
EggArrayFloat *
egg_array_float_remove_outliers (EggArrayFloat *data, guint length, gfloat sigma)
{
guint i;
guint j;
guint half_length;
gfloat value;
gfloat average;
gfloat average_not_inc;
gfloat average_square;
gfloat biggest_difference;
gfloat outlier_value;
EggArrayFloat *result;
g_return_val_if_fail (length % 2 == 1, NULL);
result = egg_array_float_new (data->len);
/* check for no data */
if (data->len == 0)
goto out;
half_length = (length - 1) / 2;
/* copy start and end of array */
for (i=0; i < half_length; i++)
g_array_index (result, gfloat, i) = g_array_index (data, gfloat, i);
for (i=data->len-half_length; i < data->len; i++)
g_array_index (result, gfloat, i) = g_array_index (data, gfloat, i);
/* find the standard deviation of a block off data */
for (i=half_length; i < data->len-half_length; i++) {
average = 0;
average_square = 0;
/* find the average and the squared average */
for (j=i-half_length; j<i+half_length+1; j++) {
value = g_array_index (data, gfloat, j);
average += value;
average_square += powfi (value, 2);
}
/* divide by length to get average */
average /= length;
average_square /= length;
/* find the standard deviation */
value = sqrtf (average_square - powfi (average, 2));
/* stddev is okay */
if (value < sigma) {
g_array_index (result, gfloat, i) = g_array_index (data, gfloat, i);
} else {
/* ignore the biggest difference from the average */
biggest_difference = 0;
outlier_value = 0;
for (j=i-half_length; j<i+half_length+1; j++) {
value = fabs (g_array_index (data, gfloat, j) - average);
if (value > biggest_difference) {
biggest_difference = value;
outlier_value = g_array_index (data, gfloat, j);
}
}
average_not_inc = (average * length) - outlier_value;
average_not_inc /= length - 1;
g_array_index (result, gfloat, i) = average_not_inc;
}
}
out:
return result;
}
/***************************************************************************
*** MAKE CHECK TESTS ***
***************************************************************************/
#ifdef EGG_TEST
#include "egg-test.h"
void
egg_array_float_test (gpointer data)
{
EggArrayFloat *array;
EggArrayFloat *kernel;
EggArrayFloat *result;
gfloat value;
gfloat sigma;
guint size;
EggTest *test = (EggTest *) data;
if (egg_test_start (test, "EggArrayFloat") == FALSE)
return;
/************************************************************/
egg_test_title (test, "make sure we get a non null array");
array = egg_array_float_new (10);
if (array != NULL)
egg_test_success (test, "got EggArrayFloat");
else
egg_test_failed (test, "could not get EggArrayFloat");
egg_array_float_print (array);
egg_array_float_free (array);
/************************************************************/
egg_test_title (test, "make sure we get the correct length array");
array = egg_array_float_new (10);
if (array->len == 10)
egg_test_success (test, "got correct size");
else
egg_test_failed (test, "got wrong size");
/************************************************************/
egg_test_title (test, "make sure we get the correct array sum");
value = egg_array_float_sum (array);
if (value == 0.0)
egg_test_success (test, "got correct sum");
else
egg_test_failed (test, "got wrong sum (%f)", value);
/************************************************************/
egg_test_title (test, "remove outliers");
egg_array_float_set (array, 0, 30.0);
egg_array_float_set (array, 1, 29.0);
egg_array_float_set (array, 2, 31.0);
egg_array_float_set (array, 3, 33.0);
egg_array_float_set (array, 4, 100.0);
egg_array_float_set (array, 5, 27.0);
egg_array_float_set (array, 6, 30.0);
egg_array_float_set (array, 7, 29.0);
egg_array_float_set (array, 8, 31.0);
egg_array_float_set (array, 9, 30.0);
kernel = egg_array_float_remove_outliers (array, 3, 10.0);
if (kernel != NULL && kernel->len == 10)
egg_test_success (test, "got correct length outlier array");
else
egg_test_failed (test, "got gaussian array length (%i)", array->len);
egg_array_float_print (array);
egg_array_float_print (kernel);
/************************************************************/
egg_test_title (test, "make sure we removed the outliers");
value = egg_array_float_sum (kernel);
if (fabs(value - 30*10) < 1)
egg_test_success (test, "got sum (%f)", value);
else
egg_test_failed (test, "got wrong sum (%f)", value);
egg_array_float_free (kernel);
/************************************************************/
egg_test_title (test, "remove outliers step");
egg_array_float_set (array, 0, 0.0);
egg_array_float_set (array, 1, 0.0);
egg_array_float_set (array, 2, 0.0);
egg_array_float_set (array, 3, 0.0);
egg_array_float_set (array, 4, 0.0);
egg_array_float_set (array, 5, 0.0);
egg_array_float_set (array, 6, 0.0);
egg_array_float_set (array, 7, 10.0);
egg_array_float_set (array, 8, 20.0);
egg_array_float_set (array, 9, 50.0);
kernel = egg_array_float_remove_outliers (array, 3, 20.0);
if (kernel != NULL && kernel->len == 10)
egg_test_success (test, "got correct length outlier array");
else
egg_test_failed (test, "got gaussian array length (%i)", array->len);
egg_array_float_print (array);
egg_array_float_print (kernel);
/************************************************************/
egg_test_title (test, "make sure we removed the outliers");
value = egg_array_float_sum (kernel);
if (fabs(value - 80) < 1)
egg_test_success (test, "got sum (%f)", value);
else
egg_test_failed (test, "got wrong sum (%f)", value);
egg_array_float_free (kernel);
/************************************************************/
egg_test_title (test, "get gaussian 0.0, sigma 1.1");
value = egg_array_float_guassian_value (0.0, 1.1);
if (fabs (value - 0.36267) < 0.0001)
egg_test_success (test, "got correct gaussian");
else
egg_test_failed (test, "got wrong gaussian (%f)", value);
/************************************************************/
egg_test_title (test, "get gaussian 0.5, sigma 1.1");
value = egg_array_float_guassian_value (0.5, 1.1);
if (fabs (value - 0.32708) < 0.0001)
egg_test_success (test, "got correct gaussian");
else
egg_test_failed (test, "got wrong gaussian (%f)", value);
/************************************************************/
egg_test_title (test, "get gaussian 1.0, sigma 1.1");
value = egg_array_float_guassian_value (1.0, 1.1);
if (fabs (value - 0.23991) < 0.0001)
egg_test_success (test, "got correct gaussian");
else
egg_test_failed (test, "got wrong gaussian (%f)", value);
/************************************************************/
egg_test_title (test, "get gaussian 0.5, sigma 4.5");
value = egg_array_float_guassian_value (0.5, 4.5);
if (fabs (value - 0.088108) < 0.0001)
egg_test_success (test, "got correct gaussian");
else
egg_test_failed (test, "got wrong gaussian (%f)", value);
/************************************************************/
size = 5;
sigma = 1.1;
egg_test_title (test, "get inprecise gaussian array (%i), sigma %f", size, sigma);
kernel = egg_array_float_compute_gaussian (size, sigma);
if (kernel == NULL)
egg_test_success (test, NULL);
else {
egg_test_failed (test, "got gaussian array length (%i)", array->len);
egg_array_float_print (kernel);
}
/************************************************************/
size = 9;
sigma = 1.1;
egg_test_title (test, "get gaussian-9 array (%i), sigma %f", size, sigma);
kernel = egg_array_float_compute_gaussian (size, sigma);
if (kernel != NULL && kernel->len == size)
egg_test_success (test, "got correct length gaussian array");
else
egg_test_failed (test, "got gaussian array length (%i)", array->len);
egg_array_float_print (kernel);
/************************************************************/
egg_test_title (test, "make sure we get an accurate gaussian");
value = egg_array_float_sum (kernel);
if (fabs(value - 1.0) < 0.01)
egg_test_success (test, "got sum (%f)", value);
else
egg_test_failed (test, "got wrong sum (%f)", value);
/************************************************************/
egg_test_title (test, "make sure we get get and set");
egg_array_float_set (array, 4, 100.0);
value = egg_array_float_get (array, 4);
if (value == 100.0)
egg_test_success (test, "got value okay", value);
else
egg_test_failed (test, "got wrong value (%f)", value);
egg_array_float_print (array);
/************************************************************/
egg_test_title (test, "make sure we get the correct array sum (2)");
egg_array_float_set (array, 0, 20.0);
egg_array_float_set (array, 1, 44.0);
egg_array_float_set (array, 2, 45.0);
egg_array_float_set (array, 3, 89.0);
egg_array_float_set (array, 4, 100.0);
egg_array_float_set (array, 5, 12.0);
egg_array_float_set (array, 6, 76.0);
egg_array_float_set (array, 7, 78.0);
egg_array_float_set (array, 8, 1.20);
egg_array_float_set (array, 9, 3.0);
value = egg_array_float_sum (array);
if (fabs (value - 468.2) < 0.0001f)
egg_test_success (test, "got correct sum");
else
egg_test_failed (test, "got wrong sum (%f)", value);
/************************************************************/
egg_test_title (test, "test convolving with kernel #1");
egg_array_float_set (array, 0, 0.0);
egg_array_float_set (array, 1, 0.0);
egg_array_float_set (array, 2, 0.0);
egg_array_float_set (array, 3, 0.0);
egg_array_float_set (array, 4, 100.0);
egg_array_float_set (array, 5, 0.0);
egg_array_float_set (array, 6, 0.0);
egg_array_float_set (array, 7, 0.0);
egg_array_float_set (array, 8, 0.0);
egg_array_float_set (array, 9, 0.0);
result = egg_array_float_convolve (array, kernel);
if (result->len == 10)
egg_test_success (test, "got correct size convolve product");
else
egg_test_failed (test, "got correct size convolve product (%f)", result->len);
egg_array_float_print (result);
/************************************************************/
egg_test_title (test, "make sure we get the correct array sum of convolve #1");
value = egg_array_float_sum (result);
if (fabs(value - 100.0) < 5.0)
egg_test_success (test, "got correct (enough) sum (%f)", value);
else
egg_test_failed (test, "got wrong sum (%f)", value);
egg_array_float_free (result);
/************************************************************/
egg_test_title (test, "test convolving with kernel #2");
egg_array_float_set (array, 0, 100.0);
egg_array_float_set (array, 1, 0.0);
egg_array_float_set (array, 2, 0.0);
egg_array_float_set (array, 3, 0.0);
egg_array_float_set (array, 4, 0.0);
egg_array_float_set (array, 5, 0.0);
egg_array_float_set (array, 6, 0.0);
egg_array_float_set (array, 7, 0.0);
egg_array_float_set (array, 8, 0.0);
egg_array_float_set (array, 9, 0.0);
result = egg_array_float_convolve (array, kernel);
if (result->len == 10)
egg_test_success (test, "got correct size convolve product");
else
egg_test_failed (test, "got correct size convolve product (%f)", result->len);
egg_array_float_print (array);
egg_array_float_print (result);
/************************************************************/
egg_test_title (test, "make sure we get the correct array sum of convolve #2");
value = egg_array_float_sum (result);
if (fabs(value - 100.0) < 10.0)
egg_test_success (test, "got correct (enough) sum (%f)", value);
else
egg_test_failed (test, "got wrong sum (%f)", value);
egg_array_float_free (result);
/************************************************************/
egg_test_title (test, "test convolving with kernel #3");
egg_array_float_set (array, 0, 0.0);
egg_array_float_set (array, 1, 0.0);
egg_array_float_set (array, 2, 0.0);
egg_array_float_set (array, 3, 0.0);
egg_array_float_set (array, 4, 0.0);
egg_array_float_set (array, 5, 0.0);
egg_array_float_set (array, 6, 0.0);
egg_array_float_set (array, 7, 0.0);
egg_array_float_set (array, 8, 0.0);
egg_array_float_set (array, 9, 100.0);
result = egg_array_float_convolve (array, kernel);
if (result->len == 10)
egg_test_success (test, "got correct size convolve product");
else
egg_test_failed (test, "got correct size convolve product (%f)", result->len);
egg_array_float_print (array);
egg_array_float_print (result);
/************************************************************/
egg_test_title (test, "make sure we get the correct array sum of convolve #3");
value = egg_array_float_sum (result);
if (fabs(value - 100.0) < 10.0)
egg_test_success (test, "got correct (enough) sum (%f)", value);
else
egg_test_failed (test, "got wrong sum (%f)", value);
egg_array_float_free (result);
/************************************************************/
egg_test_title (test, "test convolving with kernel #4");
egg_array_float_set (array, 0, 10.0);
egg_array_float_set (array, 1, 10.0);
egg_array_float_set (array, 2, 10.0);
egg_array_float_set (array, 3, 10.0);
egg_array_float_set (array, 4, 10.0);
egg_array_float_set (array, 5, 10.0);
egg_array_float_set (array, 6, 10.0);
egg_array_float_set (array, 7, 10.0);
egg_array_float_set (array, 8, 10.0);
egg_array_float_set (array, 9, 10.0);
result = egg_array_float_convolve (array, kernel);
if (result->len == 10)
egg_test_success (test, "got correct size convolve product");
else
egg_test_failed (test, "got incorrect size convolve product (%f)", result->len);
egg_array_float_print (array);
egg_array_float_print (result);
/************************************************************/
egg_test_title (test, "make sure we get the correct array sum of convolve #4");
value = egg_array_float_sum (result);
if (fabs(value - 100.0) < 1.0)
egg_test_success (test, "got correct (enough) sum (%f)", value);
else
egg_test_failed (test, "got wrong sum (%f)", value);
/************************************************************/
egg_test_title (test, "test convolving with kernel #5");
egg_array_float_set (array, 0, 10.0);
egg_array_float_set (array, 1, 10.0);
egg_array_float_set (array, 2, 10.0);
egg_array_float_set (array, 3, 10.0);
egg_array_float_set (array, 4, 0.0);
egg_array_float_set (array, 5, 10.0);
egg_array_float_set (array, 6, 10.0);
egg_array_float_set (array, 7, 10.0);
egg_array_float_set (array, 8, 10.0);
egg_array_float_set (array, 9, 10.0);
result = egg_array_float_convolve (array, kernel);
if (result->len == 10)
egg_test_success (test, "got correct size convolve product");
else
egg_test_failed (test, "got incorrect size convolve product (%f)", result->len);
egg_array_float_print (array);
egg_array_float_print (result);
/************************************************************/
egg_test_title (test, "make sure we get the correct array sum of convolve #5");
value = egg_array_float_sum (result);
if (fabs(value - 90.0) < 1.0)
egg_test_success (test, "got correct (enough) sum (%f)", value);
else
egg_test_failed (test, "got wrong sum (%f)", value);
/*************** INTEGRATION TEST ************************/
egg_test_title (test, "integration down");
egg_array_float_set (array, 0, 0.0);
egg_array_float_set (array, 1, 1.0);
egg_array_float_set (array, 2, 2.0);
egg_array_float_set (array, 3, 3.0);
egg_array_float_set (array, 4, 4.0);
egg_array_float_set (array, 5, 5.0);
egg_array_float_set (array, 6, 6.0);
egg_array_float_set (array, 7, 7.0);
egg_array_float_set (array, 8, 8.0);
egg_array_float_set (array, 9, 9.0);
size = egg_array_float_compute_integral (array, 0, 4);
if (size == 0+1+2+3+4)
egg_test_success (test, "intergrated okay");
else
egg_test_failed (test, "did not intergrated okay (%i)", size);
egg_test_title (test, "integration up");
size = egg_array_float_compute_integral (array, 5, 9);
if (size == 5+6+7+8+9)
egg_test_success (test, "intergrated okay");
else
egg_test_failed (test, "did not intergrated okay (%i)", size);
egg_test_title (test, "integration all");
size = egg_array_float_compute_integral (array, 0, 9);
if (size == 0+1+2+3+4+5+6+7+8+9)
egg_test_success (test, "intergrated okay");
else
egg_test_failed (test, "did not intergrated okay (%i)", size);
/*************** AVERAGE TEST ************************/
egg_test_title (test, "average");
egg_array_float_set (array, 0, 0.0);
egg_array_float_set (array, 1, 1.0);
egg_array_float_set (array, 2, 2.0);
egg_array_float_set (array, 3, 3.0);
egg_array_float_set (array, 4, 4.0);
egg_array_float_set (array, 5, 5.0);
egg_array_float_set (array, 6, 6.0);
egg_array_float_set (array, 7, 7.0);
egg_array_float_set (array, 8, 8.0);
egg_array_float_set (array, 9, 9.0);
value = egg_array_float_get_average (array);
if (value == 4.5)
egg_test_success (test, "averaged okay");
else
egg_test_failed (test, "did not average okay (%i)", value);
egg_array_float_free (result);
egg_array_float_free (array);
egg_array_float_free (kernel);
egg_test_end (test);
}
#endif
|