Formatting scientific number representation in xsl

Question

I have the following value in my XML -1.8959581529998104E-4. I want to format this to the exact number it should be using XSL to give me -0.000189595815299981.

fo

Answer 1

This is based on user357812 answer. But I made it act like a function and handle non-scientific notation

Usage:

This should handle a mix of scientific notation and decimal values.