java - Recover the original number from a float -

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numbers being stored in database (out of control) floats/doubles etc.

when pull them out damaged - example 0.1 come out (when formatted) 0.100000001490116119384765625.

is there reliable way recover these numbers?

i have tried new bigdecimal(((number) o).doublevalue()) , bigdecimal.valueof(((number) o).doublevalue()) these not work. still damaged result.

i aware make assumptions on number of decimal places , round them break numbers deliberately 0.33333333333 example.

is there simple method work rationals?

i suppose asking is there simple way of finding minimal rational number within small delta of float number?.

you can store numbers in database string , on retrieval parsedouble() them. way number wont damaged, same store there.


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