/* * 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