/*
  freeRam.cpp -- return how much memory we have between heap and stack
   Doesnt' belong in this library but I don't want to make another lib now...
 */
#include "Plot.h"
int freeRam()
{
  extern int __heap_start, *__brkval;
  int v;
  return (int) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval);
}