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Support non-integer exponents to handle the result of square root #3439

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Dec 7, 2023
Merged

Support non-integer exponents to handle the result of square root #3439

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b42bdcf
Support non-integer exponents to handle the result of square.
HansOlsson Nov 16, 2023
4234c28
Update according to decision.
HansOlsson Nov 28, 2023
cf0595e
Update chapters/unitexpressions.tex
HansOlsson Nov 30, 2023
f4df9cb
Update chapters/unitexpressions.tex
HansOlsson Dec 1, 2023
121a8a9
Update chapters/unitexpressions.tex
HansOlsson Dec 1, 2023
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6 changes: 4 additions & 2 deletions chapters/unitexpressions.tex
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Expand Up @@ -42,11 +42,13 @@ \section{The Syntax of Unit Expressions}\label{the-syntax-of-unit-expressions}
unit-operand [ unit-exponent ]

unit-exponent :
[ "+" | "-" ] UNSIGNED-INTEGER
[ "+" | "-" ] ( UNSIGNED-INTEGER | "(" UNSIGNED-INTEGER "/" UNSIGNED-INTEGER ")" )
\end{lstlisting}

The SI standard uses super-script for the exponentation, and does thus not define any operator symbol for exponentiation.
A \lstinline[language=grammar]!unit-factor! consists of a \lstinline[language=grammar]!unit-operand! possibly suffixed by a possibly signed integer number, which is interpreted as an exponent.
A \lstinline[language=grammar]!unit-factor! normally consists of a \lstinline[language=grammar]!unit-operand! possibly suffixed by a possibly signed integer number, which is interpreted as an exponent.
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Rational exponents are needed to fully support the unit for square roots (and can be used for roots in general).
They are intended to be only be used when needed, i.e., not to represent integer exponents.
There must be no spacing between the \lstinline[language=grammar]!unit-operand! and a possible \lstinline[language=grammar]!unit-exponent!.
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\begin{lstlisting}[language=grammar]
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