Convert IEEE-754 Single Precision Float to Javascript Float
External devices (particularly Modbus) often make values available as a 32 bit IEEE-754 value [1]. It may be available as a 4 byte buffer or array, a hex string or a 32 bit integer. This flow will convert any of those into their equivalent floating point value. When given an array or buffer it assumes the bytes are provided most significant byte first. If that is not the case then it will be necessary to reorder them first (or adjust the code to allow for that).
[1] https://en.wikipedia.org/wiki/Single-precision_floating-point_format
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