helper()

Apply a square-root transformation to a single value.

Usage

helper(x)

Computes the square root of the absolute value of x, preserving the original sign.

Parameters

x: float

A numeric value to transform.

Returns

float

The signed square root: sign(x) * sqrt(abs(x)).

Notes

This function is used internally by advanced_compute() for element-wise data transformation.

Examples

>>> helper(4.0)

2.0

>>> helper(-9.0)

-3.0

>>> helper(0.0)

0.0