From a482c798ade19fa714a4c399ea4c65c18b6de6c8 Mon Sep 17 00:00:00 2001
From: John Regan <john@jrjrtech.com>
Date: Wed, 24 May 2023 15:05:19 -0400
Subject: [PATCH] pcm: declare IsSilentSample as const

GNU libstdc++ declares cmath functions as constexpr, but libc++ does
not. The C++ standards state the standard library functions should not
be declared constexpr unless explicitly required.
---
 src/pcm/ReplayGainAnalyzer.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/pcm/ReplayGainAnalyzer.cxx b/src/pcm/ReplayGainAnalyzer.cxx
index 86ba27067..5ec227923 100644
--- a/src/pcm/ReplayGainAnalyzer.cxx
+++ b/src/pcm/ReplayGainAnalyzer.cxx
@@ -86,7 +86,8 @@ CalcStereoRMS(std::span<const ReplayGainAnalyzer::Frame> src) noexcept
 	return 10 * std::log10(sum / src.size()) + 90.0 - 3.0;
 }
 
-static constexpr bool
+[[gnu::const]]
+static bool
 IsSilentSample(float value) noexcept
 {
 	return std::fabs(value) <= 1e-10f;