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@@ -117,16 +117,16 @@ rather than
\noindent
This can be compared to
-\vspace{1ex}
+\vspace{1em}
$sum \gets augend + addend$
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\noindent
versus
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+\vspace{1em}
$augend + addend \rightarrow sum$.
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+\vspace{1em}
libzahl, GNU MP, and Hebimath use the output-first
convention. LibTomMath and TomsFastMath use the