Math & Science ⇒ Passing options to commands

[Vaite]

Have two commands that take an argument. Would like to enhance the capability to take an option to apply any of the various ceiling sizes (`\bigl`, `Bigl`, `\biggl`, `\Biggl`).

Code: Select all

   \documentclass[a4paper,12pt]{article}
    \usepackage{xcolor}
    
    \ExplSyntaxOn
    
    \NewDocumentCommand \ceil {m}
      { \lceil #1 \rceil }
    
    \NewDocumentCommand \ceilbig {m}
      { \Bigl \lceil #1 \Bigr \rceil }
    
    \ExplSyntaxOff
    
    \begin{document}
    
    \ceil{x}
    
    \end{document}