Adding map(), fixing radians() and degrees(), adding cast functions (int(x) instead of (int) x), adding interrupts() and noInterrupts(), etc.

1 files changed, 58 insertions, 0 deletions

diff --git a/cores/arduino/WMath.cpp b/cores/arduino/WMath.cpp
new file mode 100644
index 0000000..c83e2a2
--- /dev/null
+++ b/cores/arduino/WMath.cpp
@@ -0,0 +1,58 @@
+/* -*- 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;
+}
+
+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;
+}
\ No newline at end of file