# How can I increase the size of the Floor signs in an Equation

I have the following equation:

    \begin{equation*}
t \leq \lfloor {(\frac{R}{\rho})}^2 \rfloor
\end{equation*}


the output looks like this:

While I want it to look like this:

where the floor signs look more nice.

Before someone suggests \left and \right... :-)

\documentclass{article}

\usepackage{amsmath}

\begin{document}

\begin{equation*}
t \leq \biggl\lfloor \biggl(\frac{R}{\rho}\biggr)^{\!\!2} \biggr\rfloor
\end{equation*}

\end{document}


Note the small negative space added in the exponent.

My personal preference goes to \DeclarePairedDelimiter from mathtools, which allows you to choose the scaling if you really want to:

\documentclass{article}

\DeclarePairedDelimiter{\floor}{\lfloor}{\rfloor}

\begin{document}

\begin{equation*}
\floor[\bigg]{\biggl(\frac{R}{\rho}\biggr)^{\!\!2}}
\qquad \floor*{\biggl(\frac{R}{\rho}\biggr)^{\!\!2}} % automatic scaling with left/right
\end{equation*}

\end{document}


I find the second version horrible but that is just my personal taste...

These are two standard ways to go:

\documentclass{memoir}
\usepackage{amsmath}

\begin{document}

\begin{equation*}
t \leq \lfloor {(\frac{R}{\rho})}^2 \rfloor
\end{equation*}

\begin{equation*}
t \leq \left\lfloor {\left(\frac{R}{\rho}\right)}^2 \right\rfloor
\end{equation*}

\begin{equation*}
t \leq \biggl\lfloor {\biggl(\frac{R}{\rho}\biggr)}^2 \biggr\rfloor
\end{equation*}

\end{document}


There is also an alternative with https://ctan.org/pkg/mathtools.

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