How can I find the stored binary value of a DOUBLE value in MySQL?
A (very) poor man's strategy is to simply:


create a table with a known float value
perform a hex dump of the table ibd file
test against a hypothesis of how the value is stored


I've tested against the IEEE754 format value, but couldn't identify the value.

I've created the table adding a string value in the same record as the float, and I've actually found that the float storage format is actually IEEE754, but it's little endian.