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author | Florian Pritz <bluewind@xinu.at> | 2013-02-11 22:58:16 +0100 |
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committer | Florian Pritz <bluewind@xinu.at> | 2013-02-11 22:59:53 +0100 |
commit | 5b1afe32cf7496acea8182278aca83f59e8384e3 (patch) | |
tree | d1c0cadb01a5d638bb12251d488b7beef8a156d0 /lib/msp430/WMath.cpp | |
parent | 4e50c8291bd83a3fbb24a209fd1f6c7cbdb5283c (diff) | |
download | mpd-box-5b1afe32cf7496acea8182278aca83f59e8384e3.tar.gz mpd-box-5b1afe32cf7496acea8182278aca83f59e8384e3.tar.xz |
Make code launchpad/energia compatible
Signed-off-by: Florian Pritz <bluewind@xinu.at>
Diffstat (limited to 'lib/msp430/WMath.cpp')
-rw-r--r-- | lib/msp430/WMath.cpp | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/lib/msp430/WMath.cpp b/lib/msp430/WMath.cpp new file mode 100644 index 0000000..d754215 --- /dev/null +++ b/lib/msp430/WMath.cpp @@ -0,0 +1,65 @@ +/* -*- 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" + /* Using interal random and srandom in file random.c + * until msp430-libc adds supports for random and srandom */ + extern long random(void); + extern void srandom(unsigned long __seed); +} + +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; } |