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fe4bfd45fe
This PR condenses the namespaces in the tint/utils folder. Change-Id: I6b541a6383386346a0b11ba46074a5981fe75f66 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/86028 Auto-Submit: Dan Sinclair <dsinclair@chromium.org> Reviewed-by: Ben Clayton <bclayton@google.com> Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
// Copyright 2021 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_TINT_UTILS_MATH_H_
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#define SRC_TINT_UTILS_MATH_H_
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#include <sstream>
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#include <string>
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#include <type_traits>
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namespace tint::utils {
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/// @param alignment the next multiple to round `value` to
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/// @param value the value to round to the next multiple of `alignment`
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/// @return `value` rounded to the next multiple of `alignment`
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/// @note `alignment` must be positive. An alignment of zero will cause a DBZ.
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template <typename T>
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inline T RoundUp(T alignment, T value) {
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return ((value + alignment - 1) / alignment) * alignment;
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}
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/// @param value the value to check whether it is a power-of-two
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/// @returns true if `value` is a power-of-two
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/// @note `value` must be positive if `T` is signed
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template <typename T>
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inline bool IsPowerOfTwo(T value) {
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return (value & (value - 1)) == 0;
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}
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/// @param value the input value
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/// @returns the largest power of two that `value` is a multiple of
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template <typename T>
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inline std::enable_if_t<std::is_unsigned<T>::value, T> MaxAlignOf(T value) {
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T pot = 1;
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while (value && ((value & 1u) == 0)) {
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pot <<= 1;
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value >>= 1;
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}
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return pot;
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}
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} // namespace tint::utils
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#endif // SRC_TINT_UTILS_MATH_H_
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