Problem Statement

Programming languages have different ways of expressing floating-point literals.

Show how floating-point literals can be expressed in your language: decimal or other bases, exponential notation, and any other special features. You may want to include a regular expression or BNF/ABNF/EBNF defining allowable formats for your language.

Let's start with the solution:

// 64-bit floating point literals:
2.3
0.3e+34

// single precision (32-bit) floating point literals:
2.3s
0.3e+34s