Mathematical functions

Hello Rooters:
I have one simple question. How do you write the absolute value of an expression. Recalling that in Fortran, the symbol is something like Abs. Where can one find a description of most frequently used mathematical functions.
Thank you,
-karla

TMath::Abs

Hi karla,
check also
cplusplus.com/ref/cmath/
all (most of them) these functions are available from interpreter.

Regards. Valeriy

For a description of the ROOT math functions, see
root.cern.ch/root/htmldoc/TMath.html

Rene