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- #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
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