From c5298c24be997b3a3787cb0504f5e0ec2e5af076 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Mon, 11 Jan 2021 11:08:22 -0500
Subject: [PATCH] start creating API for querying accelerator package features

---
 src/info.cpp | 41 +++++++++++++++++++++++++++++++++++++++--
 src/info.h   |  5 ++++-
 2 files changed, 43 insertions(+), 3 deletions(-)

diff --git a/src/info.cpp b/src/info.cpp
index bb3111cb69..8e181a79ed 100644
--- a/src/info.cpp
+++ b/src/info.cpp
@@ -1120,15 +1120,52 @@ bool Info::has_exceptions() {
 #endif
 }
 
-bool Info::has_package(const char * package_name) {
+bool Info::has_package(const std::string &package_name) {
   for (int i = 0; LAMMPS::installed_packages[i] != nullptr; ++i) {
-    if (strcmp(package_name, LAMMPS::installed_packages[i]) == 0) {
+    if (package_name == LAMMPS::installed_packages[i]) {
       return true;
     }
   }
   return false;
 }
 
+bool Info::has_accelerator_feature(const std::string &package,
+                                   const std::string &category,
+                                   const std::string &setting)
+{
+#if defined(LMP_KOKKOS)
+  if (package == "KOKKOS") {
+    if (category == "precision") {
+      if (setting == "double") return true;
+      else return false;
+    }
+  }
+#endif
+#if defined(LMP_GPU)
+  if (package == "GPU") {
+  }
+#endif
+#if defined(LMP_USER_OMP)
+  if (package == "OPENMP") {
+    if (category == "precision") {
+      if (setting == "double") return true;
+      else return false;
+    }
+  }
+#endif
+#if defined(LMP_USER_INTEL)
+  if (package == "INTEL") {
+    if (category == "precision") {
+      if (setting == "double") return true;
+      else if (setting == "mixed") return true;
+      else if (setting == "single")return true;
+      else return false;
+    }
+  }
+#endif
+  return false;
+}
+
 /* ---------------------------------------------------------------------- */
 #define _INFOBUF_SIZE 256
 
diff --git a/src/info.h b/src/info.h
index e14a2be8db..d8fa23489e 100644
--- a/src/info.h
+++ b/src/info.h
@@ -43,7 +43,10 @@ class Info : protected Pointers {
   static bool has_jpeg_support();
   static bool has_ffmpeg_support();
   static bool has_exceptions();
-  static bool has_package(const char * package_name);
+  static bool has_package(const std::string &);
+  static bool has_accelerator_feature(const std::string &,
+                                      const std::string &,
+                                      const std::string &);
 
   static std::string get_os_info();
   static std::string get_compiler_info();