From 0337f5f7fbdaa05d5cf79c32bfbd0ded47514afd Mon Sep 17 00:00:00 2001
From: conrad <conrad@localhost.localdomain>
Date: Mon, 19 Dec 2022 14:51:44 +1000
Subject: [PATCH] declare options as constexp

---
 include/armadillo_bits/gmm_misc_bones.hpp | 36 +++++++++++------------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/include/armadillo_bits/gmm_misc_bones.hpp b/include/armadillo_bits/gmm_misc_bones.hpp
index 104a7c29..44507d41 100644
--- a/include/armadillo_bits/gmm_misc_bones.hpp
+++ b/include/armadillo_bits/gmm_misc_bones.hpp
@@ -20,37 +20,37 @@
 //! @{
 
 
-struct gmm_dist_mode { const uword id;  inline explicit gmm_dist_mode(const uword in_id) : id(in_id) {} };
+struct gmm_dist_mode { const uword id;  inline constexpr explicit gmm_dist_mode(const uword in_id) : id(in_id) {} };
 
 inline bool operator==(const gmm_dist_mode& a, const gmm_dist_mode& b) { return (a.id == b.id); }
 inline bool operator!=(const gmm_dist_mode& a, const gmm_dist_mode& b) { return (a.id != b.id); }
 
-struct gmm_dist_eucl : public gmm_dist_mode { inline gmm_dist_eucl() : gmm_dist_mode(1) {} };
-struct gmm_dist_maha : public gmm_dist_mode { inline gmm_dist_maha() : gmm_dist_mode(2) {} };
-struct gmm_dist_prob : public gmm_dist_mode { inline gmm_dist_prob() : gmm_dist_mode(3) {} };
+struct gmm_dist_eucl : public gmm_dist_mode { inline constexpr gmm_dist_eucl() : gmm_dist_mode(1) {} };
+struct gmm_dist_maha : public gmm_dist_mode { inline constexpr gmm_dist_maha() : gmm_dist_mode(2) {} };
+struct gmm_dist_prob : public gmm_dist_mode { inline constexpr gmm_dist_prob() : gmm_dist_mode(3) {} };
 
-static const gmm_dist_eucl eucl_dist;
-static const gmm_dist_maha maha_dist;
-static const gmm_dist_prob prob_dist;
+static constexpr gmm_dist_eucl eucl_dist;
+static constexpr gmm_dist_maha maha_dist;
+static constexpr gmm_dist_prob prob_dist;
 
 
 
-struct gmm_seed_mode { const uword id; inline explicit gmm_seed_mode(const uword in_id) : id(in_id) {} };
+struct gmm_seed_mode { const uword id; inline constexpr explicit gmm_seed_mode(const uword in_id) : id(in_id) {} };
 
 inline bool operator==(const gmm_seed_mode& a, const gmm_seed_mode& b) { return (a.id == b.id); }
 inline bool operator!=(const gmm_seed_mode& a, const gmm_seed_mode& b) { return (a.id != b.id); }
 
-struct gmm_seed_keep_existing : public gmm_seed_mode { inline gmm_seed_keep_existing() : gmm_seed_mode(1) {} };
-struct gmm_seed_static_subset : public gmm_seed_mode { inline gmm_seed_static_subset() : gmm_seed_mode(2) {} };
-struct gmm_seed_static_spread : public gmm_seed_mode { inline gmm_seed_static_spread() : gmm_seed_mode(3) {} };
-struct gmm_seed_random_subset : public gmm_seed_mode { inline gmm_seed_random_subset() : gmm_seed_mode(4) {} };
-struct gmm_seed_random_spread : public gmm_seed_mode { inline gmm_seed_random_spread() : gmm_seed_mode(5) {} };
+struct gmm_seed_keep_existing : public gmm_seed_mode { inline constexpr gmm_seed_keep_existing() : gmm_seed_mode(1) {} };
+struct gmm_seed_static_subset : public gmm_seed_mode { inline constexpr gmm_seed_static_subset() : gmm_seed_mode(2) {} };
+struct gmm_seed_static_spread : public gmm_seed_mode { inline constexpr gmm_seed_static_spread() : gmm_seed_mode(3) {} };
+struct gmm_seed_random_subset : public gmm_seed_mode { inline constexpr gmm_seed_random_subset() : gmm_seed_mode(4) {} };
+struct gmm_seed_random_spread : public gmm_seed_mode { inline constexpr gmm_seed_random_spread() : gmm_seed_mode(5) {} };
 
-static const gmm_seed_keep_existing keep_existing;
-static const gmm_seed_static_subset static_subset;
-static const gmm_seed_static_spread static_spread;
-static const gmm_seed_random_subset random_subset;
-static const gmm_seed_random_spread random_spread;
+static constexpr gmm_seed_keep_existing keep_existing;
+static constexpr gmm_seed_static_subset static_subset;
+static constexpr gmm_seed_static_spread static_spread;
+static constexpr gmm_seed_random_subset random_subset;
+static constexpr gmm_seed_random_spread random_spread;
 
 
 namespace gmm_priv