float Light::readEv()
{
float lux;
static float lastReading;
if(!initialized) return 0;
if(paused || skipTask) return lastReading;
lux = readLux();
method = 0;
float ev = libc_log2(lux);
ev *= 3;
ev += 30;
if(filterIndex < 0) // initialize buffer
{
for(uint8_t i = 0; i < FILTER_LENGTH; i++) filter[i] = ev;
filterIndex = 0;
}
else // circular buffer
{
if(filterIndex < FILTER_LENGTH - 1) filterIndex++; else filterIndex = 0;
filter[filterIndex] = ev;
}
ev = arrayMedian(filter, FILTER_LENGTH);
lastReading = ev;
return ev;
}
int main(){
Node head1(3);
Node n1(2);
Node n2(1);
Node n3(5);
Node n4(6);
head1.Left=&n1;
head1.Right=&n3;
n1.Left=&n2;
n3.Right=&n4;
Node head2(9);
Node n1b(8);
Node n2b(2);
Node n3b(10);
Node n4b(11);
head2.Left=&n1b;
head2.Right=&n3b;
n1b.Left=&n2b;
n3b.Right=&n4b;
std::cout << " the median of the two arrays is : " << std::setprecision( 2 )<< arrayMedian(&head1,&head2)<<std::endl;
return 0;
}
