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

Question

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.
can you please tell me what to do? thanks in advance.

campa · Accepted Answer

Before someone suggests left and right... :-)
documentclass{article}

usepackage{amsmath}

begin{document}

begin{equation*}
t leq biggllfloor biggl(frac{R}{rho}biggr)^{!!2} biggrrfloor
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}

usepackage{mathtools} % loads amsmath
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...

CampanIgnis · Answer

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 leftlfloor {left(frac{R}{rho}right)}^2 rightrfloor
end{equation*}

begin{equation*}
    t leq biggllfloor {biggl(frac{R}{rho}biggr)}^2 biggrrfloor
end{equation*}

end{document}

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

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

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