51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/* Goom Project
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* Copyright (C) <2003> iOS-Software
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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 Library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "goom_tools.h"
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#include <stdlib.h>
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GoomRandom *
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goom_random_init (int i)
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{
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GoomRandom *grandom = (GoomRandom *) malloc (sizeof (GoomRandom));
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srand (i);
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grandom->pos = 1;
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goom_random_update_array (grandom, GOOM_NB_RAND);
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return grandom;
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}
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void
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goom_random_free (GoomRandom * grandom)
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{
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free (grandom);
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}
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void
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goom_random_update_array (GoomRandom * grandom, int numberOfValuesToChange)
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{
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while (numberOfValuesToChange > 0) {
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#if RAND_MAX < 0x10000
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grandom->array[grandom->pos++] = ((rand () << 16) + rand ()) / 127;
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#else
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grandom->array[grandom->pos++] = rand () / 127;
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#endif
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numberOfValuesToChange--;
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}
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}
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