问Matlab到C++代码转换

EN

int gr_tperctile = tprctile(channel_gr, sizeOfChannel, 0.2);

int Detection::tprctile(int* gr, int sizeOfChannel, double pt)
{
    qsort(gr,sizeOfChannel, sizeof(int),compare);
    int ptInd = floor( (pt/100 * sizeOfChannel ) +0.5);

    return gr[ptInd];   
}

int compare(const void * a, const void * b)
{
  return ( *(int*)a - *(int*)b );
}

toolbox.c3d.p.tprctile(Gr(:),0.2)

function val = tprctile(data, pt)
   data = sort(data);
   ptInd = round( pt/100 * length(data) );
   val = data(ptInd);