/usr/local/lib64/python3.6/site-packages/torch/include/ATen/native/cpu
Edit: /usr/local/lib64/python3.6/site-packages/torch/include/ATen/native/cpu/utils.h (1093B)
#pragma once
#include
#include
namespace at {
namespace native {
namespace {
template
inline T data_index_init(T offset) {
return offset;
}
template
inline T data_index_init(T offset, T& x, const T& X, Args&&... args) {
offset = data_index_init(offset, std::forward(args)...);
x = offset % X;
return offset / X;
}
inline bool data_index_step() {
return true;
}
template
inline bool data_index_step(T& x, const T& X, Args&&... args) {
if (data_index_step(std::forward(args)...)) {
x = ((x + 1) == X) ? 0 : (x + 1);
return x == 0;
}
return false;
}
} // namespace
namespace utils {
template
T CeilLog2(const T& x) {
if (x <= 2) {
return 1;
}
// Last set bit is floor(log2(x)), floor + 1 is ceil
// except when x is an exact powers of 2, so subtract 1 first
return static_cast(llvm::findLastSet(static_cast(x) - 1)) + 1;
}
} // namespace utils
} // namespace native
} // namespace at