From 8369c56cd1080466e11e39cd564719ca3cbdc862 Mon Sep 17 00:00:00 2001
From: Ag <17752104+agamache@users.noreply.github.com>
Date: Tue, 5 May 2026 19:09:01 -0400
Subject: [PATCH] Compile with -ffp-contract=off on arm64 macOS

---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4429cc59943..261ef566137 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -121,6 +121,10 @@ set(CMAKE_C_FLAGS_RELEASE "-O2 -DNDEBUG")
 set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG")
 set(CMAKE_OBJCXX_FLAGS_RELEASE "-O2 -DNDEBUG")
 endif()
+# IEEE 754 compliant floating-point rounding on arm64 macOS
+if (CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    add_compile_options(-Xarch_arm64 -ffp-contract=off)
+endif()
 
 if(NOT CMAKE_BUILD_TYPE )
     set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "Choose the type of build." FORCE)