From e8644cf2ee8767ee5b9025542e333da85590c94f Mon Sep 17 00:00:00 2001
From: Bill-Gray <pluto@projectpluto.com>
Date: Thu, 8 Jun 2023 21:50:19 -0400
Subject: [PATCH] Fix to enable g++ compilation on M1/M2 processors (issue
 #37).

---
 lsquare.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/lsquare.cpp b/lsquare.cpp
index 16f318db..31694c35 100644
--- a/lsquare.cpp
+++ b/lsquare.cpp
@@ -44,10 +44,12 @@ idea for nearly-singular matrices.  */
       112 bits of precision.  Either is better than "ordinary" doubles
       with a mere 52 bits of precision.   */
 
-#if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406 && !defined( __arm__)
-#define ldouble    __float128
+#if defined( __aarch64__)
+   #define ldouble _Float128
+#elif ((__GNUC__ * 100) + __GNUC_MINOR__) >= 406 && !defined( __arm__)
+   #define ldouble    __float128
 #else
-#define ldouble    long double
+   #define ldouble    long double
 #endif
 
 #define LSQUARE struct lsquare