Groups > comp.lang.java.programmer > #33882

Re: double-to-int conversion without a cast

From	Martin Gregorie <martin@address-in-sig.invalid>
Newsgroups	comp.lang.java.programmer
Subject	Re: double-to-int conversion without a cast
Date	2016-02-25 15:21 +0000
Organization	A noiseless patient Spider
Message-ID	<nan658$mg4$1@dont-email.me> (permalink)
References	<conversion-20160225020052@ram.dialup.fu-berlin.de> <nallb7$19k0$1@gioia.aioe.org> <namt0l$icf$1@dont-email.me> <20fc7234-8962-4b0d-962b-c1b5c6de17db@googlegroups.com>

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On Thu, 25 Feb 2016 05:36:06 -0800, Eric Douglas wrote:

> On Thursday, February 25, 2016 at 7:48:19 AM UTC-5, Martin Gregorie
> wrote:
>> > Math.round(double) return long. And I do think it makes sense for it
>> > to return long and not int.
>> > 
>> > I am not aware of any good conversions.
>> > 
>> > If you are willing to take an ugly one then:
>> > 
>> > v = Integer.parseInt(String.format("%.0f", x));
>> > 
>> What Arne says.
>> 
>> However it may also be worth telling them about using the Math.floor()
>> and Math.ceil() functions in conjunction with Math.round() because
>> there are some situations when round() by itself won't do what you
>> want.
>> 
>> --
>> martin@   | Martin Gregorie gregorie. | Essex, UK org       |
> 
> Those Math methods are best for simple conversion. 
>
Yep. I was thinking of tasks like converting geographic coordinates 
represented by decimal degrees held in a double into a string like 

ddd mm'ss"X.


-- 
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |

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Re: double-to-int conversion without a cast Arne Vajhøj <arne@vajhoej.dk> - 2016-02-24 20:28 -0500
  Re: double-to-int conversion without a cast Martin Gregorie <martin@address-in-sig.invalid> - 2016-02-25 12:45 +0000
    Re: double-to-int conversion without a cast Eric Douglas <e.d.programmer@gmail.com> - 2016-02-25 05:36 -0800
      Re: double-to-int conversion without a cast Martin Gregorie <martin@address-in-sig.invalid> - 2016-02-25 15:21 +0000

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