Re: What is wrong with this code?
Re: What is wrong with this code?
- Subject: Re: What is wrong with this code?
- From: John Stiles <email@hidden>
- Date: Fri, 23 Jun 2006 13:33:12 -0700
Without really considering the error you're experiencing, I'd say an
easier implementation would be
return floor(x * 4.0 + 0.5) / 4.0;
If you want to round down instead of to nearest:
return floor(x * 4.0) / 4.0;
Or round up this way:
return ceil(x * 4.0) / 4.0;
You can change the rounding by replacing "4.0" with "1.0 /
roundAmount". (e.g. 1.0 / 0.25 == 4.0)
On Jun 23, 2006, at 1:28 PM, Brad Bumgarner wrote:
I am in the process of converting an Applescript Studio app I wrote
a couple of years ago to ObjC (as a learning experience). The
following code doesn't compile and I'm not sure why. What I want to
do is round a float to the nearest .25 (quarter inch). Here is the
code:
- (float)roundToNearestQuarter: (float)numberToRound {
float decimalNumber;
int intNumber;
decimalNumber = (numberToRound * 100) + 125;
intNumber = decimalNumber - (decimalNumber % 25); // error:
invalid operands to binary %
return intNumber / 100;
}
What do I need to change to make this work?
Thanks,
Brad Bumgarner, CTA
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