Re: float

From	88888 Dihedral <dihedral88888@googlemail.com>
Newsgroups	comp.lang.c++
Subject	Re: float
Date	2011-10-28 23:27 -0700
Organization	http://groups.google.com
Message-ID	<5339181.3288.1319869626025.JavaMail.geo-discussion-forums@prog16> (permalink)
References	<fa3c19f8-c2ed-4d12-b18e-e40b574cdd31@g16g2000yqi.googlegroups.com> <30622906.1033.1319861173538.JavaMail.geo-discussion-forums@prfk19> <j8g236$agd$2@dont-email.me>

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red floyd於 2011年10月29日星期六UTC+8下午1時14分07秒寫道：
> On 10/28/2011 9:06 PM, 88888 Dihedral wrote:
> > float d1= 4/3   ;    /* promote to inetger only in the right hand side result */
> No, that's integer arithmetic, result promoted to float.
> 
> >
> > float d2= 4.0/3 ;    /* promote to float      */
> > float d3= 4/3.0 ;
> > float d4= 4.0/3.0;
> 
> Technically, the first two are promote to double, truncate to float.
> The third is already double, truncate to float.
------------------------------------------------------
int x=3;
int y=4;

float  d = x/y         ;  
float  d= ((float)x)/y ; 

/* whether  the compiler knows x,y are constants up to now ? */

Thread

float ramtin <tom.t.2090@gmail.com> - 2011-10-17 12:40 -0700
  Re: float Dombo <dombo@disposable.invalid> - 2011-10-17 21:47 +0200
  Re: float Thomas Boell <tboell@domain.invalid> - 2011-10-17 21:50 +0200
    Re: float Sjouke Burry <S@P.NL> - 2011-10-26 23:13 +0000
  Re: float Saeed Amrollahi <amrollahi.saeed@gmail.com> - 2011-10-17 13:05 -0700
    Re: float Ian Collins <ian-news@hotmail.com> - 2011-10-18 09:23 +1300
      Re: float Leigh Johnston <leigh@i42.co.uk> - 2011-10-17 21:25 +0100
        Re: float Leigh Johnston <leigh@i42.co.uk> - 2011-10-17 21:31 +0100
          Re: float Leigh Johnston <leigh@i42.co.uk> - 2011-10-17 21:33 +0100
          Re: float Ian Collins <ian-news@hotmail.com> - 2011-10-18 09:35 +1300
            Re: float ramtin <tom.t.2090@gmail.com> - 2011-10-17 13:49 -0700
  Re: float Ian Collins <ian-news@hotmail.com> - 2011-10-18 09:19 +1300
    Re: float "Paul" <pchrist<nospam>or@yahoo.co.uk> - 2011-10-18 00:55 +0100
      Re: float SG <s.gesemann@gmail.com> - 2011-10-18 05:34 -0700
        Re: float Christopher <cpisz@austin.rr.com> - 2011-10-27 14:29 -0700
          Re: float Dombo <dombo@disposable.invalid> - 2011-10-28 18:14 +0200
  Re: float 88888 Dihedral <dihedral88888@googlemail.com> - 2011-10-28 21:06 -0700
    Re: float red floyd <no.spam.here@its.invalid> - 2011-10-28 22:14 -0700
      Re: float 88888 Dihedral <dihedral88888@googlemail.com> - 2011-10-28 23:27 -0700
        Re: float red floyd <no.spam.here@its.invalid> - 2011-10-29 08:24 -0700
          Re: float ptyxs <kerloch@gmail.com> - 2011-10-30 01:40 -0700
            Re: float Ian Collins <ian-news@hotmail.com> - 2011-10-30 22:27 +1300

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