From 90b4d1b6af524463553eb580def01e755de61fa6 Mon Sep 17 00:00:00 2001
From: Max Luebke <mluebke@gfz-potsdam.de>
Date: Wed, 6 Apr 2022 10:08:45 +0200
Subject: [PATCH] Define option to toggle '-ffast-math'

---
 CMakeLists.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cb7a12b..c7a8a8e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,5 +18,15 @@ set(CMAKE_BUILD_TYPE "${CMAKE_BUILD_TYPE}" CACHE STRING
   "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel GenericOpt."
   FORCE)
 
+option(USE_UNSAFE_MATH_OPT
+  "Use compiler options to break IEEE compliances by
+    oenabling reordering of instructions when adding/multiplying of floating
+    points."
+  OFF)
+
+if(USE_UNSAFE_MATH_OPT)
+  add_compile_options(-ffast-math)
+endif()
+
 add_subdirectory(app)
 add_subdirectory(src)