float[] get_Q(int i, int len)
{
float[][] data = new float[1][];
int start;
if((start = cache.get_data(i,data,len)) < len)
{
for(int j=start;j<len;j++)
data[0][j] = (float)kernel_function(i,j);
}
return data[0];
}
float[] get_Q(int i, int len)
{
float[][] data = new float[1][];
int real_i = index[i];
if(cache.get_data(real_i,data,l) < l)
{
for(int j=0;j<l;j++)
data[0][j] = (float)kernel_function(real_i,j);
}
// reorder and copy
float buf[] = buffer[next_buffer];
next_buffer = 1 - next_buffer;
byte si = sign[i];
for(int j=0;j<len;j++)
buf[j] = si * sign[j] * data[0][index[j]];
return buf;
}