From db97455465e3894d0e4206ee98fb84a8907b4679 Mon Sep 17 00:00:00 2001
From: Henrik Tidefelt <henrikt@wolfram.com>
Date: Wed, 11 Nov 2020 20:13:46 +0100
Subject: [PATCH] Rename math command \pdfrac -> \udfrac (and introduce \pdfrac
for comparison)
---
chapters/functions.tex | 8 ++++----
mlsshared.sty | 10 +++++++++-
2 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/chapters/functions.tex b/chapters/functions.tex
index 79451cfc4..8e787c8ef 100644
--- a/chapters/functions.tex
+++ b/chapters/functions.tex
@@ -1334,11 +1334,11 @@ \subsection{Using the Derivative Annotation}\label{using-the-derivative-annotati
\begin{align*}
(\ldots,\, y(t),\, \ldots) &= \text{\lstinline!foo0!}(\ldots,\, x(t),\, b,\ldots)
\intertext{implies that:}
-(\ldots,\, \pdfrac{y(t)}{t},\, \ldots) &=
-\text{\lstinline!foo1!}(\ldots,\, x(t),\, b,\, \ldots,\, \ldots,\, \pdfrac{x(t)}{t},\, \ldots)
+(\ldots,\, \udfrac{y(t)}{t},\, \ldots) &=
+\text{\lstinline!foo1!}(\ldots,\, x(t),\, b,\, \ldots,\, \ldots,\, \udfrac{x(t)}{t},\, \ldots)
\\
-(\ldots,\, \pdfrac[2]{y(t)}{t},\, \ldots) &=
-\text{\lstinline!foo2!}(\ldots,\, x(t),\, b,\, \ldots,\, \pdfrac{x(t)}{t},\, \ldots,\, \ldots,\, \pdfrac[2]{x(t)}{t},\, \ldots)
+(\ldots,\, \udfrac[2]{y(t)}{t},\, \ldots) &=
+\text{\lstinline!foo2!}(\ldots,\, x(t),\, b,\, \ldots,\, \udfrac{x(t)}{t},\, \ldots,\, \ldots,\, \udfrac[2]{x(t)}{t},\, \ldots)
\end{align*}
\end{example}
diff --git a/mlsshared.sty b/mlsshared.sty
index 927c4f618..c7e098ca6 100644
--- a/mlsshared.sty
+++ b/mlsshared.sty
@@ -157,7 +157,7 @@
% Misc math
\newcommand{\ud}{\mathrm{d}}
-\newcommand{\pdfrac}[3][\@nil]{%
+\newcommand{\udfrac}[3][\@nil]{%
\def\tmp{#1}%
\ifx\tmp\@nnil
\frac{\ud#2}{\ud#3}%
@@ -165,6 +165,14 @@
\frac{\ud^{#1}#2}{\ud#3^{#1}}%
\fi%
}
+\newcommand{\pdfrac}[3][\@nil]{%
+ \def\tmp{#1}%
+ \ifx\tmp\@nnil
+ \frac{\partial#2}{\partial#3}%
+ \else
+ \frac{\partial^{#1}#2}{\partial#3^{#1}}%
+ \fi%
+}
\newcommand{\abs}[1]{\left\lvert #1{} \right\rvert}
% Text mode additions