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Diffstat (limited to 'wirish/wirish_math.cpp')
-rw-r--r-- | wirish/wirish_math.cpp | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/wirish/wirish_math.cpp b/wirish/wirish_math.cpp new file mode 100644 index 0000000..1443b3c --- /dev/null +++ b/wirish/wirish_math.cpp @@ -0,0 +1,49 @@ +/* + * Modified by LeafLabs, LLC. + * + * 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 + */ + +#include <stdlib.h> +#include <wirish/wirish_math.h> + +void randomSeed(unsigned int seed) { + if (seed != 0) { + srand(seed); + } +} + +long random(long howbig) { + 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; +} + |