50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
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/*
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* Modified by LeafLabs, LLC.
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*
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* Part of the Wiring project - http://wiring.org.co Copyright (c)
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* 2004-06 Hernando Barragan Modified 13 August 2006, David A. Mellis
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* for Arduino - http://www.arduino.cc/
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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 Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* 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, but
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* 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#include <stdlib.h>
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#include "math.h"
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void randomSeed(unsigned int seed) {
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if (seed != 0) {
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srand(seed);
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}
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}
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long random(long howbig) {
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if (howbig == 0) {
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return 0;
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}
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return rand() % howbig;
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}
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long random(long howsmall, long howbig) {
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if (howsmall >= howbig) {
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return howsmall;
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}
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long diff = howbig - howsmall;
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return random(diff) + howsmall;
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}
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