From 8df2d4998b98d9de2894bbe800535b8280b71fea Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Tue, 15 Aug 2023 14:14:02 +1000
Subject: [PATCH] AP_Math: improve gating of use of AP_InternalError library

 - gate calls into library directly on the define
 - INTERNAL_ERROR becomes empty if library not compiled in
---
 libraries/AP_Math/AP_Math.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/AP_Math/AP_Math.cpp b/libraries/AP_Math/AP_Math.cpp
index 0c363a312f..2e4d6ba9b5 100644
--- a/libraries/AP_Math/AP_Math.cpp
+++ b/libraries/AP_Math/AP_Math.cpp
@@ -270,7 +270,7 @@ T constrain_value_line(const T amt, const T low, const T high, uint32_t line)
     // errors through any function that uses constrain_value(). The normal
     // float semantics already handle -Inf and +Inf
     if (isnan(amt)) {
-#if !defined(IOMCU_FW)
+#if AP_INTERNALERROR_ENABLED
         AP::internalerror().error(AP_InternalError::error_t::constraining_nan, line);
 #endif
         return (low + high) / 2;