constants.hpp

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/*
 * Copyright (c) 2023, NVIDIA CORPORATION.
 *
 * 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
 *
 * https://apache.ac.cn/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 <cmath>
 
namespace cuproj {

 
// TODO：当我们能够使用 C++20 数值常量时再使用

template <typename T>
static constexpr T M_TWOPI = T{2.0} * M_PI; // 6.283185307179586476925286766559005l;

template <typename T>
static constexpr T EPSILON_RADIANS = T{1e-12};

template <typename T>
constexpr T DEG_TO_RAD = T{0.017453292519943295769236907684886};

template <typename T>
constexpr T RAD_TO_DEG = T{57.295779513082320876798154814105};

 
} // namespace cuproj