diff options
author | David A. Mellis <d.mellis@arduino.cc> | 2007-10-06 14:09:02 +0000 |
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committer | David A. Mellis <d.mellis@arduino.cc> | 2007-10-06 14:09:02 +0000 |
commit | 72e9f39fbde96b484338cbbd785680e5ab4a2e72 (patch) | |
tree | bd441d569bf70c9697ccfbee7c70fa26d67be3a0 /targets/arduino/WRandom.cpp | |
parent | b86a6e051920a4ffdb92bc5b8de7260ff3978117 (diff) |
Renaming core to targets.
Diffstat (limited to 'targets/arduino/WRandom.cpp')
-rw-r--r-- | targets/arduino/WRandom.cpp | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/targets/arduino/WRandom.cpp b/targets/arduino/WRandom.cpp new file mode 100644 index 0000000..c45c306 --- /dev/null +++ b/targets/arduino/WRandom.cpp @@ -0,0 +1,54 @@ +/* -*- 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){ + srand(seed); + } +} + +long random(long howbig) +{ + long value; + if (howbig == 0){ + return 0; + } + return rand() % howbig; +} + +long random(long howsmall, long howbig) +{ + if(howsmall >= howbig){ + return howsmall; + } + long diff = howbig - howsmall; + return random(diff) + howsmall; +} + |