godot/thirdparty/embree/common/math/constants.h

// Copyright 2009-2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0

#pragma once

#include "../sys/platform.h"

#include <limits>

#define _USE_MATH_DEFINES
#include <math.h> // using cmath causes issues under Windows
#include <cfloat>
#include <climits>

namespace embree
{
  static MAYBE_UNUSED const float one_over_255 = …;
  static MAYBE_UNUSED const float min_rcp_input = …;  // for abs(x) >= min_rcp_input the newton raphson rcp calculation does not fail

  /* we consider floating point numbers in that range as valid input numbers */
  static MAYBE_UNUSED float FLT_LARGE = …;

  struct TrueTy { … };

  const constexpr TrueTy True = …;

  struct FalseTy { … };

  const constexpr FalseTy False = …;
  
  struct ZeroTy
  { … }; 

  const constexpr ZeroTy zero = …;

  struct OneTy
  { … };

  const constexpr OneTy one = …;

  struct NegInfTy
  { … };

  const constexpr NegInfTy neg_inf = …;

  struct PosInfTy
  { … };

  const constexpr PosInfTy     inf = …;
  const constexpr PosInfTy pos_inf = …;

  struct NaNTy
  { … };

  const constexpr NaNTy nan = …;

  struct UlpTy
  { … };
  
  const constexpr UlpTy ulp = …;

  struct PiTy
  { … };

  const constexpr PiTy pi = …;

  struct OneOverPiTy
  { … };

  const constexpr OneOverPiTy one_over_pi = …;

  struct TwoPiTy
  { … };

  const constexpr TwoPiTy two_pi = …;

  struct OneOverTwoPiTy
  { … };

  const constexpr OneOverTwoPiTy one_over_two_pi = …;

  struct FourPiTy
  { … };

  const constexpr FourPiTy four_pi = …;

  struct OneOverFourPiTy
  { … };

  const constexpr OneOverFourPiTy one_over_four_pi = …;

  struct StepTy { … };

  const constexpr StepTy step = …;

  struct ReverseStepTy { … };

  const constexpr ReverseStepTy reverse_step = …;

  struct EmptyTy { … };

  const constexpr EmptyTy empty = …;

  struct FullTy { … };

  const constexpr FullTy full = …;

  struct UndefinedTy { … };

  const constexpr UndefinedTy undefined = …;
}