Commit b3fc6e8f5 for imagemagick.org

commit b3fc6e8f5975c232ffe07930cab9d0c8b8d60598
Author: Cristy <urban-warrior@imagemagick.org>
Date:   Sat Nov 7 09:31:20 2026 -0500

    https://github.com/ImageMagick/ImageMagick/pull/9101

diff --git a/MagickCore/quantum-private.h b/MagickCore/quantum-private.h
index d1397cb07..c4ea9fc5e 100644
--- a/MagickCore/quantum-private.h
+++ b/MagickCore/quantum-private.h
@@ -346,17 +346,20 @@ static inline Quantum ScaleAnyToQuantum(const QuantumAny quantum,
 static inline QuantumAny ScaleQuantumToAny(const Quantum quantum,
   const QuantumAny range)
 {
-#if !defined(MAGICKCORE_HDRI_SUPPORT)
-  if (((double) range*quantum/QuantumRange) >= 18446744073709551615.0)
-    return((QuantumAny) MagickULLConstant(18446744073709551615));
-  return((QuantumAny) ((double) range*quantum/QuantumRange));
-#else
+  double
+    value;
+
+#if defined(MAGICKCORE_HDRI_SUPPORT)
   if ((IsNaN(quantum) != 0) || (quantum <= 0.0f))
     return((QuantumAny) 0UL);
-  if (((double) range*(double) quantum/(double) QuantumRange) >= 18446744073709551615.0)
+#endif
+  value=(double) range*(double) quantum/(double) QuantumRange;
+  if (value >= 0x1p64)
     return((QuantumAny) MagickULLConstant(18446744073709551615));
-  return((QuantumAny) ((double) range*(double) quantum/(double) QuantumRange+0.5));
+#if defined(MAGICKCORE_HDRI_SUPPORT)
+  value+=0.5;
 #endif
+  return((QuantumAny) value);
 }

 #if (MAGICKCORE_QUANTUM_DEPTH == 8)