math

Parser handlers for mathematical functions.

Sin, Cos, Tan, Tanh, Asin, Acos, Atan, Atan2, Sqrt, Square, Exp, Log, Abs,

Max, Min, PositivePart, Huber, SmoothReLU, LogSumExp, Linterp, Cinterp, Bilerp

Each handler is registered under its function name via @function and turns the call-syntax form (e.g. Huber(x, 0.1)) that the Pratt parser encounters in an expression string into the corresponding math Expr node. Scalar options such as a penalty width or smoothing constant are coerced to Python floats (via _as_float) so a constant literal and a bare number parse the same way.