Text Formatting ⇒ How can I know if I am in mathematic enviroment?

[artemff]

How can I know if I am in mathematic enviroment?

[localghost]

The Unofficial LaTeX2e Reference Manual - Math formulas


Best regards
Thorsten¹

[artemff]

localghost
I need to know about it in program mode. I want to write some commands, which can do other acting, depending on if we it in mathematical environment.
For example

newcommand{\ex}
{\ifthenelse{"the command is called in math mode"}{act1}{act2}}

\[
...
\ex % do act1
...
\]
\ex % do act2

[josephwright]

TeX has the primitive \ifmmode. You will need to be careful using this with ifthenelse. If you can give a complete example of what you want to achieve, it might help.

[artemff]

josephwrightThanks..

\newcommand{\rv}{\text{В}}
\newcommand{\ra}{\text{А}}
\newcommand{\rma}{\text{мА}}
\newcommand{\rom}{\text{Ом}}
\newcommand{\rvt}{\text{Вт}}
\newcommand{\rkHz}{\text{кГц}}
In \text{} Russian units of measurement. If I amn't in math mode, i should use it without \text command.