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-rw-r--r--macros/latex/contrib/l3kernel/l3fp.dtx11
1 files changed, 10 insertions, 1 deletions
diff --git a/macros/latex/contrib/l3kernel/l3fp.dtx b/macros/latex/contrib/l3kernel/l3fp.dtx
index 8bd82ea2cb..b7ee984fa7 100644
--- a/macros/latex/contrib/l3kernel/l3fp.dtx
+++ b/macros/latex/contrib/l3kernel/l3fp.dtx
@@ -49,7 +49,7 @@
% }^^A
% }
%
-% \date{Released 2023-04-20}
+% \date{Released 2023-05-05}
%
% \maketitle
%
@@ -476,6 +476,15 @@
% slightly slower.
% \end{function}
%
+% \begin{function}[pTF, added = 2019-08-25]{\fp_if_nan:n}
+% \begin{syntax}
+% \cs{fp_if_nan:n} \Arg{fp expr}
+% \end{syntax}
+% Evaluates the \meta{fp expr} and tests whether the result is exactly
+% \nan{}. The test returns \texttt{false} for any other result, even
+% a tuple containing \nan{}.
+% \end{function}
+%
% \section{Floating point expression loops}
%
% \begin{function}[rEXP, added = 2012-08-16, tested = m3fp-logic003]