Assignment: "Imagine you're working on a library for a data analysis tool that needs to perform a variety of statistical calculations. One basic but essential feature is determining the minimum value in a set of data points. To support diverse data types within the tool, you need to create a set of functions that can find the minimum value for different types of data.

Write the definitions for three functions named min. Each function should accept two arguments of the same type and return the smaller of the two values.

Define one of these functions to apply to type double. Define another to apply to type int. Define a third to apply to type char.