From d65de99052d5ff08c7c4290a1f1b8e396105b8af Mon Sep 17 00:00:00 2001
From: Ansariel <ansariel.hiller@phoenixviewer.com>
Date: Thu, 17 Apr 2025 18:44:09 +0200
Subject: Use standard library functions for llisnan and replace obvious NaN
 checks that don't work using /fp:fast floating point behavior under MSVC

---
 indra/llappearance/llpolymorph.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'indra/llappearance')

diff --git a/indra/llappearance/llpolymorph.cpp b/indra/llappearance/llpolymorph.cpp
index 8df8a9726f..5ee6649164 100644
--- a/indra/llappearance/llpolymorph.cpp
+++ b/indra/llappearance/llpolymorph.cpp
@@ -550,12 +550,12 @@ void LLPolyMorphTarget::apply( ESex avatar_sex )
 
     mLastSex = avatar_sex;
 
-    // Check for NaN condition (NaN is detected if a variable doesn't equal itself.
-    if (mCurWeight != mCurWeight)
+    // Check for NaN condition
+    if (llisnan(mCurWeight))
     {
-        mCurWeight = 0.0;
+        mCurWeight = 0.f;
     }
-    if (mLastWeight != mLastWeight)
+    if (llisnan(mLastWeight))
     {
         mLastWeight = mCurWeight+.001f;
     }
-- 
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