Function jsonToDoubles( jsonArray )

Description:
Converts a JSONArray to an array of floating point values. The result will be the same length as the supplied JSONArray, and any element in the JSONArray which cannot be interpreted as a floating point value is represented by a NaN.
Parameters:
jsonArray (JSONArray)
JSON Array
Return Value (array of floating point):
floating point array the same length as the input array
Example:
jsonToDoubles(jsonArray("[true, \"two\", 3.0, 4, null"])) = [NaN, NaN, 3.0, 4.0, NaN]
Signature:
double[] jsonToDoubles(JSONArray)