/*
    Copyright (c) 2014 Arduino.  All right reserved.

    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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#include <stdlib.h>
#include <stdint.h>

void randomSeed(uint32_t dwSeed) {
    if (dwSeed != 0) {
        srand(dwSeed) ;
    }
}

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;
}