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| -rw-r--r-- | src/common/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | src/common/div_ceil.h | 26 |
2 files changed, 27 insertions, 0 deletions
diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt index d20e6c3b5..56c7e21f5 100644 --- a/src/common/CMakeLists.txt +++ b/src/common/CMakeLists.txt @@ -112,6 +112,7 @@ add_library(common STATIC common_paths.h common_types.h concepts.h + div_ceil.h dynamic_library.cpp dynamic_library.h fiber.cpp diff --git a/src/common/div_ceil.h b/src/common/div_ceil.h new file mode 100644 index 000000000..6b2c48f91 --- /dev/null +++ b/src/common/div_ceil.h @@ -0,0 +1,26 @@ +// Copyright 2020 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <cstddef> +#include <type_traits> + +namespace Common { + +/// Ceiled integer division. +template <typename N, typename D> +requires std::is_integral_v<N>&& std::is_unsigned_v<D>[[nodiscard]] constexpr auto DivCeil( + N number, D divisor) { + return (static_cast<D>(number) + divisor - 1) / divisor; +} + +/// Ceiled integer division with logarithmic divisor in base 2 +template <typename N, typename D> +requires std::is_integral_v<N>&& std::is_unsigned_v<D>[[nodiscard]] constexpr auto DivCeilLog2( + N value, D alignment_log2) { + return (static_cast<D>(value) + (D(1) << alignment_log2) - 1) >> alignment_log2; +} + +} // namespace Common |