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48 lines
1.6 KiB
48 lines
1.6 KiB
/*
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* Copyright 2020 The Android Open Source Project
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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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*/
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#pragma once
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#include <limits>
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#include <type_traits>
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namespace bluetooth {
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namespace common {
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// Check if input is within numeric limits of RawType
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template <typename RawType, typename InputType>
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bool IsNumberInNumericLimits(InputType input) {
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// Only arithmetic types are supported
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static_assert(std::is_arithmetic_v<RawType> && std::is_arithmetic_v<InputType>);
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// Either both are signed or both are unsigned
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static_assert(
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(std::is_signed_v<RawType> && std::is_signed_v<InputType>) ||
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(std::is_unsigned_v<RawType> && std::is_unsigned_v<InputType>));
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if (std::numeric_limits<InputType>::max() > std::numeric_limits<RawType>::max()) {
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if (input > std::numeric_limits<RawType>::max()) {
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return false;
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}
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}
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if (std::numeric_limits<InputType>::lowest() < std::numeric_limits<RawType>::lowest()) {
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if (input < std::numeric_limits<RawType>::lowest()) {
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return false;
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}
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}
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return true;
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}
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} // namespace common
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} // namespace bluetooth
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