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Mtgox using single precision float for bitcoin?
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Topic: Mtgox using single precision float for bitcoin? (Read 1879 times)
gmaxwell
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Mtgox using single precision float for bitcoin?
June 03, 2011, 06:25:56 AM
#1
I put in a sell order for 1 BTC on MTGOX at 1e120, just to see what the limit was. The system now reports I have an open order at 3.40282e+38.
This doesn't fill me with confidence. Might make some of the weird rounding on orders I've heard people complain about in IRC make more sense...
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Re: Mtgox using single precision float for bitcoin?
June 03, 2011, 07:00:54 AM
#2
yikes
somestranger
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Re: Mtgox using single precision float for bitcoin?
June 03, 2011, 07:34:16 AM
#3
Quote from: gmaxwell on June 03, 2011, 06:25:56 AM
This doesn't fill me with confidence.
Me either... why wouldn't they use double precision?
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Re: Mtgox using single precision float for bitcoin?
June 03, 2011, 07:40:46 AM
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Quote from: somestranger on June 03, 2011, 07:34:16 AM
Me either... why wouldn't they use double precision?
Why wouldn't they use fixed-point? Floating point is for when you don't know how many decimal places you need. With Bitcoin you know exactly how many you need; Mt. Gox should not use floating point at all.
Tips are always welcome and can be sent to 1CZ8QgBWZSV3nLLqRk2BD3B4qDbpWAEDCZ
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