Date: Sun, 11 Jul 2004 21:06:32 +0400 (MSD) From: Dmitry Morozovsky <marck@rinet.ru> To: freebsd-hackers@freebsd.org Subject: gcc strangeness Message-ID: <20040711210219.J84500@woozle.rinet.ru>
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Dear colleagues,
one of my friends has raisen very strange issue regarding gcc rounding:
marck@woozle:/tmp/tsostik> uname -r
4.10-STABLE
marck@woozle:/tmp/tsostik> gcc -v
Using builtin specs.
gcc version 2.95.4 20020320 [FreeBSD]
marck@woozle:/tmp/tsostik> cat x.c
#include <stdio.h>
int main ()
{
float a;
for(a=0.01;a<=0.1; a+=0.01)
printf("%f %.3f %d\n", a*100, a*100, (int)(a*100));
return 0;
}
marck@woozle:/tmp/tsostik> cc x.c
marck@woozle:/tmp/tsostik> ./a.out
1.000000 1.000 0
2.000000 2.000 1
3.000000 3.000 2
4.000000 4.000 3
5.000000 5.000 5
6.000000 6.000 6
7.000000 7.000 7
8.000000 8.000 7
9.000000 9.000 8
9.999999 10.000 9
Any comments?
Sincerely,
D.Marck [DM5020, MCK-RIPE, DM3-RIPN]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
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