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/******************************************************************************
* The MIT License
*
* Copyright (c) 2015 Bryan Newbold
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*****************************************************************************/
/*
* Arduino-compatible digital math implementation.
*
* This replaces the old copyleft wirish_math implementation of randomSeed(),
* and random().
*
* This file is a "clean" implementation using only the API documentation
* without directly copying from the Arduino source. It simply wraps routines
* provided in stdlib.
*/
#include <stdlib.h>
#include <wirish/wirish_math.h>
void randomSeed(unsigned int seed) {
if (seed != 0) {
srand(seed);
}
}
long random(long max) {
if (max <= 0) {
max = 1;
}
return map(rand(), 0, RAND_MAX, 0, max-1);
}
long random(long min, long max) {
if (max <= min) {
max = min + 1;
}
return map(rand(), 0, RAND_MAX, min, max-1);
}
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