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[mathcad] Re: Rounding up/down error
| [mathcad] Re: Rounding up/down error |
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Author: Chris Whitford
Posted: Wed, 16 Jul 2003 17:20:55 +0100
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I wonder whether some people are missing the point here. There is no law of
nature which says that 0.5 must round up. The IEEE floating point formats
(which the PC FP processor uses) say that 0.5 rounds to the nearest even
integer - 1.5 will round to 2 while 2.5 will also round to 2. But Mathcad
does numerical calculations with real numbers, which, except for special
cases, like integers, are approximated by floating point numbers. If you
are worried about the missing digits, display more of them! If you really
need 0.5 to mean exactly 1/2, you need to use the symbolic processor.
Chris
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+ Research Fellow Space Research Centre +
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+ email: LEICESTER LE1 7RH +
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