"Martin v. Loewis" <martin@loewis.home.cs.tu-berlin.de>: > To computer numerics fanatics, it is surprising that 1.0 is inexact, > since the common representations of floating point numbers are well > capable of representing it exactly. I suppose in principle one could meticulously keep track of which floating point numbers in a calculation were exact and which weren't. But you'd lose the property that any arithmetic operation on exact operands produces an exact result. Also, it would be very tedious and inefficient to have to keep track of exactness so exactly! Greg Ewing, Computer Science Dept, +--------------------------------------+ University of Canterbury, | A citizen of NewZealandCorp, a | Christchurch, New Zealand | wholly-owned subsidiary of USA Inc. | greg@cosc.canterbury.ac.nz +--------------------------------------+
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