| /* |
| * Copyright 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #pragma once |
| |
| #include <limits> |
| #include <type_traits> |
| |
| namespace bluetooth { |
| namespace common { |
| |
| // Check if input is within numeric limits of RawType |
| template <typename RawType, typename InputType> |
| bool IsNumberInNumericLimits(InputType input) { |
| // Only arithmetic types are supported |
| static_assert(std::is_arithmetic_v<RawType> && std::is_arithmetic_v<InputType>); |
| // Either both are signed or both are unsigned |
| static_assert( |
| (std::is_signed_v<RawType> && std::is_signed_v<InputType>) || |
| (std::is_unsigned_v<RawType> && std::is_unsigned_v<InputType>)); |
| if (std::numeric_limits<InputType>::max() > std::numeric_limits<RawType>::max()) { |
| if (input > std::numeric_limits<RawType>::max()) { |
| return false; |
| } |
| } |
| if (std::numeric_limits<InputType>::lowest() < std::numeric_limits<RawType>::lowest()) { |
| if (input < std::numeric_limits<RawType>::lowest()) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| } // namespace common |
| } // namespace bluetooth |