This node evaluates arithmetic and mathematical expressions safely using a restricted AST interpreter. It accepts a single expression or a list of expressions and returns structured results for each.
Actions (Mathematical features)
- Arithmetic operators:
+,-,*,/,%,//(floor division),**(power) - Unary operators:
+,- - Bitwise operators:
&,|,^,<<,>> - Math functions:
sin,cos,tan,asin,acos,atan,atan2,sinh,cosh,tanh,exp,log,log10,sqrt,abs,round,floor,ceil,factorial,pow - Constants:
pi,e,tau,inf,nan - Tuples: construction of tuples of supported expressions (e.g.,
"(1, 2+3)")
Unsupported / Forbidden Mathematical Constructs
- Matrix multiplication operator (
@) disallowed - Function calls other than the listed math functions
- Keyword arguments to functions
- Variables/identifiers other than the listed constants
- Complex numbers (not supported unless expressed via allowed functions/constants)
- Results with absolute value >
1e100rejected as too large
Inputs and configuration (brief)
- expr: string or list of strings expression(s) to evaluate (caret ^ rewrites to **).
- max_nodes: per-expression AST node limit.
- timeout: per-expression timeout in seconds.
Output (brief)
- results: array of objects per input with fields: input, result (or null), error (or null), meta (includes execution time).