| /* -*- mode: jde; c-basic-offset: 2; indent-tabs-mode: nil -*- */ |
| |
| /* |
| Part of the Wiring project - http://wiring.org.co |
| Copyright (c) 2004-06 Hernando Barragan |
| Modified 13 August 2006, David A. Mellis for Arduino - http://www.arduino.cc/ |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General |
| Public License along with this library; if not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
| Boston, MA 02111-1307 USA |
| |
| $Id$ |
| */ |
| |
| extern "C" { |
| #include "stdlib.h" |
| } |
| |
| void randomSeed(unsigned int seed) |
| { |
| if (seed != 0) { |
| srandom(seed); |
| } |
| } |
| |
| long random(long howbig) |
| { |
| if (howbig == 0) { |
| return 0; |
| } |
| return random() % howbig; |
| } |
| |
| long random(long howsmall, long howbig) |
| { |
| if (howsmall >= howbig) { |
| return howsmall; |
| } |
| long diff = howbig - howsmall; |
| return random(diff) + howsmall; |
| } |
| |
| long map(long x, long in_min, long in_max, long out_min, long out_max) |
| { |
| return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min; |
| } |
| |
| unsigned int makeWord(unsigned int w) { return w; } |
| unsigned int makeWord(unsigned char h, unsigned char l) { return (h << 8) | l; } |