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From: rrt0136 AT ibm DOT net (Ronald Van Iwaarden)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Bug in floor/ceil
Date: Sat, 02 Dec 1995 20:15:55 -0500
Organization: Who me organized?
Lines: 20
References: <1995Dec2 DOT 084304 DOT 15106 AT frontier DOT tno DOT nl>
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To: djgpp AT sun DOT soe DOT clarkson DOT edu
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In article <1995Dec2 DOT 084304 DOT 15106 AT frontier DOT tno DOT nl>,
antwerp AT tpd DOT tno DOT nl (Gert van Antwerpen) wrote:
>Hai folks,
>
>I found a problem in the floor/ceil of the emu386.dxe and libemu.a.
>The following program gives 3 times zero (0)!
>
>#include <math.h>
>
>main()
>{
>   printf("%g\n",floor(.1));
>   printf("%g\n",floor(.5));
>   printf("%g\n",floor(.9));
>}

That is not a bug, floor(x) returns the greatest integer that is less than
or equal to x. It does not round as you appear to believe that it should.

--Ron