expr Evaluate a C-like mathematical expression Expr, written by Shahrokh Yadegari, evaluates an expression involving the "variables" $i1-$i9 (the first to ninth inlets, taken as integers), $f1-$f9 (the inlets as floats) and $s1-$s9 (the inlets as symbols), and/or constants of the same types. The operators are +, -, *, /, &, |, &&, ||, !, ~, and ^. You can call a set of predefined mathematical and statistical functions. For instance, midi-to-hertz conversion can be done as:

from the library : Max Format : External Environment : max commercial Max 4.x http://www.cycling74.com