#include "swap.h"

SchedDefineTask1(swap,swap);

static int
swap(SchedTask* s, void* rbuf,void* wbuf)
{
    int* inData = (int*)s->get_input(rbuf, 0);
    int* outData = (int*)s->get_output(wbuf, 0);
    long block = (long)s->get_param(0);
    long first = (long)s->get_param(1);
    int x = s->x;
    
    int position = x/block;
    int index = x+block*position;

    block = (first == 1)? ((block<<1)*(position+1))-(index%block)-1 : index+block;
    
    if (inData[block] < inData[index]) {
        int tmp = inData[index];
        outData[index] = inData[block];
        outData[block] = tmp;
    }
    
    return 0;
}