From 0aad7c32b6806c826848b21bb1d2699eb79de29b Mon Sep 17 00:00:00 2001
From: Mike Oliphant <oliphant@nostatic.org>
Date: Mon, 19 Jun 2023 10:58:05 -0700
Subject: [PATCH] Add CMake option for denormal disabling

---
 src/CMakeLists.txt | 6 ++++++
 src/nam_lv2.cpp    | 6 ++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 8f7ac77..6ca6c97 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -22,6 +22,12 @@ add_library(neural_amp_modeler MODULE ${SOURCES} ${NAM_SOURCES})
 source_group(TREE ${CMAKE_CURRENT_SOURCE_DIR} FILES ${SOURCES})
 source_group(NAM ${CMAKE_CURRENT_SOURCE_DIR} FILES ${NAM_SOURCES})
 
+option(DISABLE_DENORMALS "Disable floating point denormals" ON)
+
+if(DISABLE_DENORMALS)
+	add_definitions(-DDISABLE_DENORMALS)
+endif(DISABLE_DENORMALS)
+
 target_compile_features(neural_amp_modeler PUBLIC cxx_std_17)
 
 set_target_properties(neural_amp_modeler
diff --git a/src/nam_lv2.cpp b/src/nam_lv2.cpp
index b836438..50ef348 100644
--- a/src/nam_lv2.cpp
+++ b/src/nam_lv2.cpp
@@ -43,15 +43,17 @@ static void activate(LV2_Handle) {}
 
 static void run(LV2_Handle instance, uint32_t n_samples)
 {
-	// Disable floating point denormals
+#ifdef DISABLE_DENORMALS	// Disable floating point denormals
 	std::fenv_t fe_state;
 	std::feholdexcept(&fe_state);
 	disable_denormals();
+#endif
 
 	static_cast<NAM::Plugin*>(instance)->process(n_samples);
 
-	// restore previous floating point state
+#ifdef DISABLE_DENORMALS	// restore previous floating point state
 	std::feupdateenv(&fe_state);
+#endif
 }
 
 static void deactivate(LV2_Handle) {}