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diff --git a/ChangeLog b/ChangeLog
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@@ -1,3 +1,21 @@
+2024-04-19  Bruno Haible  <bruno@clisp.org>
+
+        signed-nan: Don't assume that '-' works as expected on NaN values.
+        * lib/signed-nan.h (minus_NaNf): New function.
+        (positive_NaNf, negative_NaNf): Use it.
+        (minus_NaNd): New function.
+        (positive_NaNd, negative_NaNd): Use it.
+        (minus_NaNl): New function.
+        (positive_NaNl, negative_NaNl): Use it.
+        * tests/test-totalorder.c (TOTALORDER_MINUS): New macro.
+        * tests/test-totalorderf.c (TOTALORDER_MINUS): New macro.
+        * tests/test-totalorderl.c (TOTALORDER_MINUS): New macro.
+        * tests/test-totalorder.h (negative_NaN_with_payload): Use it.
+        * tests/test-totalordermag.c (TOTALORDER_MINUS): New macro.
+        * tests/test-totalordermagf.c (TOTALORDER_MINUS): New macro.
+        * tests/test-totalordermagl.c (TOTALORDER_MINUS): New macro.
+        * tests/test-totalordermag.h (negative_NaN_with_payload): Use it.
+
 2024-04-19  Collin Funk  <collin.funk1@gmail.com>
 
         gnulib-tool.py: Add a comment about coding style.