Computing with real arithmetic. (development of a logarithm-based method of representing numbers on a computer)

Science News | July 20, 1991| | Copyright

Computers and calculators generally have a fixed, limited number of slots in which to stuff the digits that make up a given number. This presents a problem when a computation involves a number that has more digits than the number of slots available. To overcome that difficulty, computer scientists in the 1950s developed the floating-point system of arithmetic, expressing each number in two parts. One set of digits gives the rounded-off number, and the other set represents, in effect, the position of the decimal point.

Although widely applied, the floating-point ...

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