text: /*
   * Copyright (C) 2016 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.
   */
  
  #ifndef TNT_MATH_SCALAR_H
  #define TNT_MATH_SCALAR_H
  
  #include <algorithm>
  #include <cmath>
  #include <math/compiler.h>
  
  namespace math {
  
  template<typename T>
  inline constexpr T MATH_PURE saturate(T v) noexcept {
      return T(std::min(T(1), std::max(T(0), v)));
  }
  
  template<typename T>
  inline constexpr T MATH_PURE clamp(T v, T min, T max) noexcept {
      return T(std::min(max, std::max(min, v)));
  }
  
  template<typename T>
  inline constexpr T MATH_PURE mix(T x, T y, T a) noexcept {
      return x * (T(1) - a) + y * a;
  }
  
  template<typename T>
  inline constexpr T MATH_PURE lerp(T x, T y, T a) noexcept {
      return mix(x, y, a);
  }
  
  } // namespace math
  
  #endif // TNT_MATH_SCALAR_H
  