From b9b1c8661ea77e3ab23699aafae1b593926a2c4e Mon Sep 17 00:00:00 2001
From: Tyler Veness <calcmogul@gmail.com>
Date: Mon, 13 May 2024 12:46:15 -0700
Subject: [PATCH] Suppress C++23 deprecation warnings for std::has_denorm and
 std::has_denorm_loss

---
 Eigen/src/Core/arch/Default/BFloat16.h | 14 ++++++++++++++
 Eigen/src/Core/arch/Default/Half.h     | 14 ++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/Eigen/src/Core/arch/Default/BFloat16.h b/Eigen/src/Core/arch/Default/BFloat16.h
index f31c6cee6..9e79a39a4 100644
--- a/Eigen/src/Core/arch/Default/BFloat16.h
+++ b/Eigen/src/Core/arch/Default/BFloat16.h
@@ -139,8 +139,15 @@ struct numeric_limits_bfloat16_impl {
   static EIGEN_CONSTEXPR const bool has_infinity = true;
   static EIGEN_CONSTEXPR const bool has_quiet_NaN = true;
   static EIGEN_CONSTEXPR const bool has_signaling_NaN = true;
+#if __cplusplus >= 202302L
+  EIGEN_DIAGNOSTICS(push)
+  EIGEN_DISABLE_DEPRECATED_WARNING
+#endif
   static EIGEN_CONSTEXPR const std::float_denorm_style has_denorm = std::denorm_present;
   static EIGEN_CONSTEXPR const bool has_denorm_loss = false;
+#if __cplusplus >= 202302L
+  EIGEN_DIAGNOSTICS(pop)
+#endif
   static EIGEN_CONSTEXPR const std::float_round_style round_style = std::numeric_limits<float>::round_style;
   static EIGEN_CONSTEXPR const bool is_iec559 = true;
   // The C++ standard defines this as "true if the set of values representable
@@ -187,10 +194,17 @@ template <typename T>
 EIGEN_CONSTEXPR const bool numeric_limits_bfloat16_impl<T>::has_quiet_NaN;
 template <typename T>
 EIGEN_CONSTEXPR const bool numeric_limits_bfloat16_impl<T>::has_signaling_NaN;
+#if __cplusplus >= 202302L
+EIGEN_DIAGNOSTICS(push)
+EIGEN_DISABLE_DEPRECATED_WARNING
+#endif
 template <typename T>
 EIGEN_CONSTEXPR const std::float_denorm_style numeric_limits_bfloat16_impl<T>::has_denorm;
 template <typename T>
 EIGEN_CONSTEXPR const bool numeric_limits_bfloat16_impl<T>::has_denorm_loss;
+#if __cplusplus >= 202302L
+EIGEN_DIAGNOSTICS(pop)
+#endif
 template <typename T>
 EIGEN_CONSTEXPR const std::float_round_style numeric_limits_bfloat16_impl<T>::round_style;
 template <typename T>
diff --git a/Eigen/src/Core/arch/Default/Half.h b/Eigen/src/Core/arch/Default/Half.h
index 9c195c12a..7754e8f27 100644
--- a/Eigen/src/Core/arch/Default/Half.h
+++ b/Eigen/src/Core/arch/Default/Half.h
@@ -208,8 +208,15 @@ struct numeric_limits_half_impl {
   static EIGEN_CONSTEXPR const bool has_infinity = true;
   static EIGEN_CONSTEXPR const bool has_quiet_NaN = true;
   static EIGEN_CONSTEXPR const bool has_signaling_NaN = true;
+#if __cplusplus >= 202302L
+  EIGEN_DIAGNOSTICS(push)
+  EIGEN_DISABLE_DEPRECATED_WARNING
+#endif
   static EIGEN_CONSTEXPR const std::float_denorm_style has_denorm = std::denorm_present;
   static EIGEN_CONSTEXPR const bool has_denorm_loss = false;
+#if __cplusplus >= 202302L
+  EIGEN_DIAGNOSTICS(pop)
+#endif
   static EIGEN_CONSTEXPR const std::float_round_style round_style = std::round_to_nearest;
   static EIGEN_CONSTEXPR const bool is_iec559 = true;
   // The C++ standard defines this as "true if the set of values representable
@@ -256,10 +263,17 @@ template <typename T>
 EIGEN_CONSTEXPR const bool numeric_limits_half_impl<T>::has_quiet_NaN;
 template <typename T>
 EIGEN_CONSTEXPR const bool numeric_limits_half_impl<T>::has_signaling_NaN;
+#if __cplusplus >= 202302L
+EIGEN_DIAGNOSTICS(push)
+EIGEN_DISABLE_DEPRECATED_WARNING
+#endif
 template <typename T>
 EIGEN_CONSTEXPR const std::float_denorm_style numeric_limits_half_impl<T>::has_denorm;
 template <typename T>
 EIGEN_CONSTEXPR const bool numeric_limits_half_impl<T>::has_denorm_loss;
+#if __cplusplus >= 202302L
+EIGEN_DIAGNOSTICS(pop)
+#endif
 template <typename T>
 EIGEN_CONSTEXPR const std::float_round_style numeric_limits_half_impl<T>::round_style;
 template <typename T>