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April 21, 2000 08:18Subject:

Re[2]: [ID 20000420.006] rounding floating numbers by *printMessage ID:

0004219563.AA956330946@univpress.comOn a related topic, I am putting the finishing touches on a module which will deal with the floating point/rounding issues completely in many normal situations. I have already written and distributed Math::Currency, which deals with currency values as integers, using strict financial style rounding. I have been using it in a production environment for nearly a year now. I have now (mostly) generalized that to be Math::FixedPrecision, which will allow arbitrary precision to be maintained, without either rounding errors or floating point nonsense (e.g., what is 100/9?). I will then turn Math::Currency into a wrapper and use the Posix Locale data to use the appropriate currency display. I foresee Math::FixedPrecision to also be useful in scientific situations, where the result of a calculation should be no more accurate than the least accurate datum. Watch CPAN for an announcement soon... John Peacock ____________________Reply Separator____________________ Subject: Re: [ID 20000420.006] rounding floating numbers by *printf i Author: Ronald J Kimball <rjk@linguist.dartmouth.edu> Date: 4/21/2000 10:48 AM On Fri, Apr 21, 2000 at 03:04:20PM +0900, TOMITA Shigenari wrote: > Return value of sprintf( "%2.0f", 0.5 ) is 0! > But *printf for the value 1.5 works great! > Many numbers are also rounded badly. > You can play adding some 0's and 1 after 0.5, > say 0.501 or 0.5000000000000001. :} > % perldoc -q round =head2 Does Perl have a round() function? What about ceil() and floor()? Trig functions?

**Re[2]: [ID 20000420.006] rounding floating numbers by *print**by jpeacock

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