Author: Vincent Diepeveen
Date: 10:38:16 09/10/02
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On September 09, 2002 at 23:06:36, Robert Hyatt wrote: >On September 09, 2002 at 12:05:27, Vincent Diepeveen wrote: > >>On September 09, 2002 at 10:04:12, Ed Panek wrote: >> >>Which compiler did you use? >> >>It is exactly these reasons that i was very sick from >>intel c++ compiler, because it is doing everything >>wrong with casts of floating point math. >>you write 'java oddity' above. intel j++ exists nowadays? > >It isn't a compiler problem it is an IEEE floating point problem in that >.1 can not be comverted exactly, it becomes an approximation. Yes that's what he is talking about, but i'm talking about other major bugs inthe compiler which causes random values. > >2.01 == 2.009997 roughly. * 1000 = 2009.997, truncated to a long gives >2009. No bug. No error. Floating point conversion followed by integer >conversion makes this natural. > > > > > >> >>>long x; >>>double y; >>> >>>y = 2.01; >>>x = (long)(y * 1000); >>> >>> >>>guess what x equals? ... >>> >>>No, not 2010, but 2009 !!!!!!!!!!!!!!! >>> >>>Ed
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