/usr/local/lib64/python3.6/site-packages/torch/include/ATen
Edit: /usr/local/lib64/python3.6/site-packages/torch/include/ATen/div_rtn.h (204B)
#pragma once
// Integer division rounding to -Infinity
template
static inline T div_rtn(T x, T y) {
int q = x/y;
int r = x%y;
if ((r!=0) && ((r<0) != (y<0))) --q;
return q;
}