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614b4d1627
Original commit message from CVS: * gst/gstcaps.c: (gst_caps_append), (gst_caps_union): check for ANY caps before appending/unioning * gst/gstcaps.c: (gst_caps_is_subset), (gst_caps_is_equal), (gst_caps_structure_subtract_field), (gst_caps_structure_subtract), (gst_caps_subtract): * gst/gstcaps.h: add gst_caps_is_equal, gst_caps_is_subset and gst_caps_subtract to the API. deprecate gst_caps_is_equal_fixed * gst/gstpad.c: (gst_pad_try_set_caps): * gst/gstqueue.c: (gst_queue_link): s/gst_caps_is_equal_fixed/gst_caps_is_equal/ * gst/gststructure.c: (gst_structure_get_name_id): * gst/gststructure.h: add function gst_structure_get_name_id * gst/gstvalue.c: (gst_value_subtract_int_int_range), (gst_value_create_new_range), (gst_value_subtract_int_range_int), (gst_value_subtract_int_range_int_range), (gst_value_subtract_double_double_range), (gst_value_subtract_double_range_double), (gst_value_subtract_double_range_double_range), (gst_value_subtract_from_list), (gst_value_subtract_list), (gst_value_can_intersect), (gst_value_subtract), (gst_value_can_subtract), (gst_value_register_subtract_func), (_gst_value_initialize): * gst/gstvalue.h: add support for subtracting values from each other. Note that subtracting means subtracting as in set theory. Required for caps stuff above. * testsuite/caps/.cvsignore: * testsuite/caps/Makefile.am: * testsuite/caps/erathostenes.c: (erathostenes), (main): * testsuite/caps/sets.c: (check_caps), (main): * testsuite/caps/subtract.c: (check_caps), (main): add tests for subtraction and equality code.
72 lines
2 KiB
C
72 lines
2 KiB
C
/*
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* Copyright (C) 2004 Benjamin Otte <in7y118@public.uni-hamburg.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <gst/gst.h>
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#include <stdlib.h>
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#define MAX_SIEVE 20
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static void
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erathostenes (GValue * sieve, gboolean up, int size)
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{
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guint i, j;
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GValue temp = { 0, };
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GValue list = { 0, };
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g_value_init (sieve, GST_TYPE_INT_RANGE);
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gst_value_set_int_range (sieve, 2, size * size);
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for (i = up ? 2 : size; up ? (i <= size) : (i >= 2); i += up ? 1 : -1) {
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g_value_init (&list, GST_TYPE_LIST);
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for (j = 2 * i; j <= size * size; j += i) {
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GValue v = { 0, };
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g_value_init (&v, G_TYPE_INT);
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g_value_set_int (&v, j);
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gst_value_list_append_value (&list, &v);
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g_value_unset (&v);
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}
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gst_value_subtract (&temp, sieve, &list);
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g_value_unset (sieve);
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gst_value_init_and_copy (sieve, &temp);
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g_value_unset (&temp);
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g_value_unset (&list);
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/* g_print ("%2u: %s\n", i, gst_value_serialize (sieve)); */
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}
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g_print ("%s\n", gst_value_serialize (sieve));
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}
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gint
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main (gint argc, gchar ** argv)
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{
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GValue up = { 0, };
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GValue down = { 0, };
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guint size = MAX_SIEVE;
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gst_init (&argc, &argv);
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if (argc > 1)
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size = atol (argv[1]);
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erathostenes (&up, TRUE, size);
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erathostenes (&down, FALSE, size);
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g_assert (gst_value_compare (&up, &down) == GST_VALUE_EQUAL);
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return 0;
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}
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