What is a floating point number and what is double precision?

Question

I am confused because it has no definitions defining what they mean by those two phrases.

Answer 1

Floating point number, more commonly known as a float, is a number which consist of a decimal point and decimal values.
Double precision values, known as double, are decimal values which have the minimum precision of a float. In programming, double variables are used to store decimal values at a much more precise level compared to float (i.e. More numbers after the decimal point)