Re: Accurate decimal numbers?
Re: Accurate decimal numbers?
- Subject: Re: Accurate decimal numbers?
- From: John Stiles <email@hidden>
- Date: Fri, 31 Dec 2004 17:08:38 -0800
On Dec 31, 2004, at 4:42 PM, Brendan Younger wrote:
Avoiding int<->float conversions is always best. I'd suggest if(0.0 == fabs(x - rint(x)), but I don't claim to be the expert on this.
If you're going to compare against zero, why use absolute value?
0 == -0.
I'd probably use "floor(x) == x"; since it makes a function call, it's not the
fastest technique possible, but the intent is crystal clear and in 99.9% of cases, that's more important.
(After dropping the fabs and algebraic simplification, your version is just "rint(x) == x", basically the same thing.)
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