HISTSIZE
int force, lastslot, i, j, k, tto, time_histo[HISTSIZE];
for (i = 0; i < HISTSIZE; i++)
j = HISTSIZE - 1;
j = j * HISTSIZE / tto;
for (i = 0; i < (HISTSIZE - 2); i++) {
k = tto * (i + 1) / HISTSIZE;