[gcc(refs/users/meissner/heads/work223-float)] Update ChangeLog.*

[Michael Meissner]

https://gcc.gnu.org/g:dc337e3dc2d407716eef830faf4edf5ef24cdd7a

commit dc337e3dc2d407716eef830faf4edf5ef24cdd7a
Author: Michael Meissner <meissner@linux.ibm.com>
Date:   Fri Oct 31 18:27:22 2025 -0400

    Update ChangeLog.*

Diff:
---
 gcc/ChangeLog.float             | 25 +++++++++++++++++++++++++
 libstdc++-v3/ChangeLog.meissner | 11 +++++++++++
 2 files changed, 36 insertions(+)

diff --git a/gcc/ChangeLog.float b/gcc/ChangeLog.float
index f49f660708d3..ac5fa7778e6f 100644
--- a/gcc/ChangeLog.float
+++ b/gcc/ChangeLog.float
@@ -1,3 +1,28 @@
+==================== Branch work223-float, patch #320 ====================
+
+Add --with-powerpc-16bit-floating-point.
+
+2025-10-31  Michael Meissner  <meissner@linux.ibm.com>
+
+gcc/
+
+	* config.gcc (powerpc*-*-*): Add support for the configuration option
+	--with-powerpc-16bit-floating-point.
+	* config/rs6000/rs6000-cpus.def (TARGET_16BIT_FLOATING_POINT): Likewise.
+	(ISA_2_7_MASKS_SERVER): Likewise.
+	(POWERPC_MASKS): Likewise.
+
+==================== Branch work223-float, patch #319 ====================
+
+Fix __bfloat16 signalling NaN support on PowerPC.
+
+2025-10-31  Michael Meissner  <meissner@linux.ibm.com>
+
+libstdc++-v3/
+
+	* include/limits (__bfloat16 signaling_NaN): Use __builtin_nansf and
+	convert it to __bfloat16 instead of using __builtin_nansf16b.
+
 ==================== Branch work223-float, patch #318 ====================
 
 Use TARGET_FLOAT16_HW as a condition instead of TARGET_P9_VECTOR.
diff --git a/libstdc++-v3/ChangeLog.meissner b/libstdc++-v3/ChangeLog.meissner
index 0d82ea4ddd71..1e13edb48fc1 100644
--- a/libstdc++-v3/ChangeLog.meissner
+++ b/libstdc++-v3/ChangeLog.meissner
@@ -1,3 +1,14 @@
+==================== Branch work223-float, patch #319 ====================
+
+Fix __bfloat16 signalling NaN support on PowerPC.
+
+2025-10-31  Michael Meissner  <meissner@linux.ibm.com>
+
+libstdc++-v3/
+
+	* include/limits (__bfloat16 signaling_NaN): Use __builtin_nansf and
+	convert it to __bfloat16 instead of using __builtin_nansf16b.
+
 ==================== Branch work223, baseline ====================
 
 2025-10-20   Michael Meissner  <meissner@linux.ibm.com>