davidot 2334cd85a2 AK: Add an exact and fast hex float parsing algorithm ...

Similar to decimal floating point parsing the current strtod hex float
parsing gives a lot of incorrect results. We can use a similar technique
as with decimal parsing however hex floats are much simpler as we don't
need to scale with a power of 5.

For hex floats we just provide the parse_first_hexfloat API as there is
currently no need for a parse_hexfloat_completely API.

Again the accepted input for parse_first_hexfloat is very lenient and
any validation should be done before calling this method.

2022-10-23 15:48:45 +02:00

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