F/D extensions to v2.2

3 files changed, 16 insertions, 4 deletions

diff --git a/src/d.tex b/src/d.tex
index ffd1c05..022ce7d 100644
--- a/src/d.tex
+++ b/src/d.tex
@@ -1,5 +1,5 @@
 \chapter{``D'' Standard Extension for Double-Precision Floating-Point,
-Version 2.0}
+Version 2.2}
 
 This chapter describes the standard double-precision floating-point
 instruction-set extension, which is named ``D'' and adds
diff --git a/src/f.tex b/src/f.tex
index b4196d4..1688a41 100644
--- a/src/f.tex
+++ b/src/f.tex
@@ -1,5 +1,5 @@
 \chapter{``F'' Standard Extension for Single-Precision Floating-Point,
-Version 2.0}
+Version 2.2}
 \label{sec:single-float}
 
 This chapter describes the standard instruction-set extension for
@@ -412,6 +412,14 @@ result is the canonical NaN.  If only one operand is a NaN, the result is the
 non-NaN operand.  Signaling NaN inputs raise the invalid operation exception,
 even when the result is not NaN.
 
+\begin{commentary}
+Note that in version 2.2 of the F extension, the FMIN.S and FMAX.S
+instructions were amended to implement the proposed IEEE 754-201x
+minimumNumber and maximumNumber operations, rather than the IEEE 754-2008
+minNum and maxNum operations.  These operations differ in their handling of
+signaling NaNs.
+\end{commentary}
+
 \vspace{-0.2in}
 \begin{center}
 \begin{tabular}{R@{}F@{}R@{}R@{}F@{}R@{}O}
diff --git a/src/preface.tex b/src/preface.tex
index e23852f..5654539 100644
--- a/src/preface.tex
+++ b/src/preface.tex
@@ -19,8 +19,8 @@ versions of the RISC-V ISA modules:
     \hline
     M        & 2.0 & Y \\
     A        & 2.0 & Y \\
-    F        & 2.0 & Y \\
-    D        & 2.0 & Y \\
+    F        & 2.2 & Y \\
+    D        & 2.2 & Y \\
     Q        & 2.0 & Y \\
     L        & 0.0 & N \\
     C        & 2.0 & Y \\
@@ -47,6 +47,10 @@ The major changes in this version of the document include:
 \itemsep 1pt
 \item Changed document version scheme to avoid confusion with versions
   of the ISA modules.
+\item Incremented the version numbers of the F and D extensions to 2.2,
+  reflecting that version 2.1 changed the canonical NaN, and version
+  2.2 defined the NaN-boxing scheme and changed the definition of the
+  FMIN and FMAX instructions.
 \item Changed name of document to refer to ``unprivileged''
   instructions as part of move to separate ISA specifications from
   platform profile mandates.