DDSJSON — Handling Unsupported Numeric Values like Infinity and NaN

As stated in ECMA-404, JSON does not provide native representation for values like "Infinity", "-Infinity", and "NaN":

Numeric values that cannot be represented as sequences of digits (such as Infinity and NaN) are not permitted.

However, these are values that need to be handled by a JSON encoder and decoder. Therefore, we should provide a standard representation for such values so that all implementations of DDS-JSON can follow the same approach.

Define mapping of numeric values that cannot be represented as digit sequences

This resolution provides a mapping for numeric values (such as "Infinity", "-Infinity", and "Nan") that cannot be represented as digit sequences and are therefore invalid JSON according to [ECMA-404].