Christian Feuersänger
-
2014-03-30
- status: open --> closed-fixed
The function sign would fit
very well to functions like abs
. My proposal for
pgfmathfunctions.basic.code.tex
:
\pgfmathdeclarefunction{sign}{1}{% \begingroup \ifdim#1pt>\z@ \def\pgfmathresult{1}% \else \ifdim#1pt=\z@ \def\pgfmathresult{0}% \else \def\pgfmathresult{-1}% \fi \fi \pgfmath@smuggleone\pgfmathresult \endgroup }
Example for its usefulness can be seen
here.