Expr.tanh

methodView source ↗

def tanh() -> Expr

Categories: numeric

Calculate the hyperbolic tangent of the element value.

Examples

>>> import tabsdata as td
>>>
>>> tf: td.TableFrame ...
>>>
>>> tf.select(td.col("val"), td.col("val").tanh().alias("tanh"))
>>>
┌─────┬──────────┐
│ val ┆ tanh     │
│ --- ┆ ---      │
│ f64 ┆ f64      │
╞═════╪══════════╡
│ 0.0 ┆ 0.0      │
│ 3.0 ┆ 0.995055 │
│ 6.0 ┆ 0.999988 │
│ 9.0 ┆ 1.0      │
└─────┴──────────┘