From 5899ee71c5d1590488f7c5580ab78d9980f9c0b1 Mon Sep 17 00:00:00 2001
From: Mark Borgerding <markb@3db-labs.com>
Date: Wed, 26 Nov 2025 10:41:21 -0500
Subject: [PATCH] std::acosl was introduced in c++11, std::acos(long double)
 overload appears more robust

---
 test/testcpp.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/testcpp.cc b/test/testcpp.cc
index b9dee94..50acada 100644
--- a/test/testcpp.cc
+++ b/test/testcpp.cc
@@ -45,7 +45,7 @@ void dotest(int nfft)
 
     // Create long double constant for pi because M_PIl is not defined by
     // all toolchains.
-    const long double pi = std::acosl(-1);
+    const long double pi = std::acos(static_cast<long double>(-1));
 
     for (int k0=0;k0<nfft;++k0) {
         complex<long double> acc = 0;