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Figure 10-4
Coding of Some Floating Point Numbers |
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These two answers are the same in the thousands place, but different thereafter. The error behind this discrepancy is called representational error. |
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Because of representational errors, it is unwise to use a floating point number as a loop control variable. Because precision may be lost in calculations involving floating point numbers, it is difficult to predict when (or even if) a loop control variable of type float (or double or long double) will become equal to the termination value. A count-controlled loop with a floating point control variable may behave in an unpredictable fashion. |
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