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authorPerry Hung <iperry@alum.mit.edu>2010-04-25 18:08:56 -0400
committerPerry Hung <iperry@alum.mit.edu>2010-04-25 18:08:56 -0400
commit62552a6f3f93223682f9df2df2614411f7e3d54c (patch)
tree05f71e01c98ac341c029b2a050b796f1be3de8b5 /wirish/wirish_math.cpp
parent7ea059f945003c90ab56b1e6f762df9ae29ddf3c (diff)
downloadlibrambutan-62552a6f3f93223682f9df2df2614411f7e3d54c.tar.gz
librambutan-62552a6f3f93223682f9df2df2614411f7e3d54c.zip
Refactoring:
The 'core' directory has now been renamed to 'wirish.' Wirish is our version of the Arduino Wiring language.
Diffstat (limited to 'wirish/wirish_math.cpp')
-rw-r--r--wirish/wirish_math.cpp54
1 files changed, 54 insertions, 0 deletions
diff --git a/wirish/wirish_math.cpp b/wirish/wirish_math.cpp
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+/*
+ 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
+
+ $Id$
+*/
+
+#include <stdlib.h>
+#include "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;
+}
+
+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;
+}
+
+