#pragma once
#include <c10/macros/Macros.h>
#include <type_traits>
namespace at {
/**
Computes ceil(a / b)
*/
template <typename T, typename = std::enable_if_t<std::is_integral_v<T>>>
C10_ALWAYS_INLINE C10_HOST_DEVICE T ceil_div(T a, T b) {
return (a + b - 1) / b;
}
/**
Computes ceil(a / b) * b; i.e., rounds up `a` to the next highest
multiple of b
*/
template <typename T>
C10_ALWAYS_INLINE C10_HOST_DEVICE T round_up(T a, T b) {
return ceil_div(a, b) * b;
}
} // namespace at